Mr Gary Hays

Since 1989 we have been manufacturing and installing high quality home improvement products to properties around Hertfordshire, Middlesex and North London. We&#39;re proud to offer our customers a wide choice of quality bespoke products, including Evolution Storm and Evolution Flush, the latest innovation in timber replacement doors and windows. See us at our Watford showroom on the St Albans Road or our factory in Old&#39;s Approach Watford, where we manufacture many of our products.Our Mission:To provide top quality local installations. We may not be the cheapest out there but we have full confidence in the quality and integrity of our products and our fitting teams. The outward appearance of most replacement windows and doors can be almost identical, but don&#39;t be fooled into thinking that all uPVC products are more or less the same! The quality of the materials, construction, overall design, locking and weather proofing systems can vary immensely from manufacturer to manufacturer. Here at Harp, we only install top quality products in uPVC, aluminium and timber: <ul><li>Rehau uPVC casement windows and doors</li><li>Evolution Storm and Flush timber replacement windows and doors</li><li>English Door Company for our premium range of front and back doors</li><li>Origin aluminium windows, doors and bifolding doors</li><li>Ultimate Rose uPVC premium sliding sash windows</li><li>Quickslide uPVC sliding sash windows</li><li>ALUK aluminium windows and doors</li><li>Kömmerling uPVC casement windows and doors</li><li>Gerda High security contemporary aluminium and steel doors</li><li>Bereco sustainably sourced engineered timber windows</li></ul> Sales and Service:Over the years, we’ve worked hard to build a reputation for professional integrity, efficient customer service, high quality products and value for money. Customer satisfaction is paramount to us, we do everything possible to ensure our customers are delighted with their new windows, doors or conservatory. Our commitment to our customers does not simply end once your installation is complete. We provide a comprehensive aftersales service which provides total peace of mind for all our customers and we are fully committed to providing our customers with an after sales service that is second to none. Browse our comprehensive Checkatrade Image Gallery for a great selection of photos of our many installations.

6-Panel bifold door in woodgrain finish aluminium

Welcome to Harp! Looking after our customers since 1989.

Videos

A complete change for this property in Haslemere, from dark wood to Evolution Storm 2. Interesting change for the feature Georgian too. We think it brightens the home up beautifully! 

Before & After

BEFORE & AFTER. Fiddler's Green. Customer wanted to match as closely as possible to the existing top right window and doors in black and replace the white windows to match. Black aluminium sashes into white aluminium outer frames with feature diamond leads. We added an additional top light and casement to the main centre upstairs window to add balance with the bay windows.

End of terrace Victorian cottage needed some TLC. The old anodised aluminium casements were completely out of keeping with the original character. Brand new box sashes have given this property a new lease of life and returned its character to how it should be.

BEFORE

DURING: A work in progress!

Showcasing this fantastic orangery and patio project. New orangery featuring anthracite 3-panel bifold doors with sidelights, new emlarged patio area, brickwork removal and replacement of window with additional 3-panel bifold in anthracite. 

BEFORE & AFTER: Orangery and patio extension.

Original front door

AFTER: Villiers Road, Watford. Smart new Visage Edinburgh solid composite door featuring brass furniture, multi-locking escutcheon (rim latch) and fixed panel side windows in satin obscure glass.

New composite front door

BEFORE: Traditional style roof lantern. A much "busier" look overall. AFTER: Ultrasky sleek and stylish roof lantern. Rickmansworth, Herts.

Before & After: roof lantern

Before - rotten old windows!

Rehau rosewood foiled uPVC windows, dummy sashes throughout for equal sightlines, feature rectangle leads.

After - a brand new look!

Harrow, Middlesex. French door combination with rectangle leads and full opening casement side windows.

French door combination

Rehau French doors and windows with top opening side windows, feature rectangle leads.

Unusual character property featuring two "turrets". Original casements were timber and pretty much rotten.

Character property in Bushey

Casements refitted into both turrets in Evolution FLUSH timber replacement featuring ovolo putty Georgian bar, to replicate as closely as possible the original timber casements.

The Rise, Edgware

AFTER: Existing windows replaced with Rehau dummy vented with black bay pole covers to the bays and black cills throughout.

Old white externally beaded window with internal Georgian bar

BEFORE & AFTER

Evolution STORM light oak finish window with ovolo putty Georgian bars.

Evolution 1930s door and side panels to replace previous uPVC door with panel.

Before and After New Origin 4panel aluminium bifold doors and demi lune window to replace wooden French doors with horizontal bars.

BEFORE  AFTER

Potters Bar, Evolution Flush windows and Evolution front door and side panels.

Replacing timber windows with new Rehau uPVC windows with leads. Black cills and bay poles. Feature leaded landing window.

Before and after

Raglan Gardens, Oxhey Hall. Evolution FLUSH with ovolo/putty external Georgian bar fanlights. Featuring the rather cool looking timber-like corner welds.

Evolution FLUSH

Close up on Raglan Gardens, Oxhey Hall. Evolution FLUSH with ovolo/putty external Georgian bar fanlights. Featuring the rather cool looking timber-like corner welds.

Raglan Gardens, Oxhey Hall. Rear view. Evolution FLUSH with ovolo/putty external Georgian bar fanlights. Featuring the rather cool looking timber-like corner welds. 3-panel Origin bifold door with brushed steel escutcheon multi-locking handle.

SEE THE DIFFERENCE! On the left - a standard uPVC window with internal Georgian bar. On the right - Evolution FLUSH timber effect with ovolo/putty external Georgian, featuring the timber-like corner welds. WHAT A DIFFERENCE EVOLUTION MAKES!

Regular uPVC -v- Evolution FLUSH

Evolution FLUSH Tudor windows and doors, rear elevation, Highview, Pinner. A fantastic example of our Evolution Flush system in the striking Tudor option (white woodgrain effect vents into a black woodgrain outer frame). Feature ovolo putty Georgian bars throughout.

FLUSH TUDOR

Highview Pinner, front elevation. Evolution FLUSH TUDOR black and white windows and doors with feature ovolo putty external Georgian bars. A fantastic looking job we think!

Highview Pinner, rear elevation. Evolution FLUSH TUDOR black and white windows and doors with feature ovolo putty external Georgian bars. A fantastic looking job we think!

Highview Pinner, rear elevation. Evolution FLUSH TUDOR black and white windows to bay with feature ovolo putty external Georgian bars throughout.

Highview Pinner, rear elevation. Evolution FLUSH TUDOR black and white windows to bay side returns and Evolution STORM TUDOR black and white French doors. Feature ovolo putty external Georgian bars throughout.

Tudor windows are black frames with white vents. Feature ovolo putty external Georgian bars to upper sashes. Feature gable window above.

Evolution FLUSH windows in light oak finish with feature horizontal ovolo putty Georgian bar. Fitted into a barn conversion in Sarratt, Herts.

Evolution FLUSH windows

BEFORE: Unusual character property with two "turrets". Original wooden casements were pretty rotten.

Turrets refitted with our Evolution FLUSH timber replacement system featuring ovolo putty Georgian bar to replicate the original timber casements as closely as possible.

Evolution FLUSH bays

The smaller turret refitted with our Evolution FLUSH timber replacement system featuring ovolo putty Georgian bar to replicate the original timber casements as closely as possible.

Evolution FLUSH bay

The smaller turret viewed from the inside.

Oxhey Hall: Evolution FLUSH casements with ovolo putty Georgian bar fanlights

Evolution FLUSH casements with ovolo putty Georgian bar fanlights

Evolution FLUSH bay with black external cills

Evolution FLUSH black and white. Black outer frame, drip rail, bay pole covers and cills. White vents. Rectangle leaded units.

Evolution FLUSH black & white bay

Evolution FLUSH black and white. Black outer frame, bay pole covers and cills. White vents. Rectangle leaded units.

Evolution FLUSH casement window with ovolo putty Georgian bar

Evolution FLUSH casement windows with ovolo putty Georgian bar

Radlett, Herts Evolution FLUSH window installation with ovolo putty Georgian bars to fanlights. Sheerframe box sashes with feature Georgian bars to upper windows.

Evolution FLUSH bay and Sheerframe Sash windows

Radlett, Herts Evolution FLUSH window installation with ovolo putty Georgian bars to fanlights. Sited next to the original window next door.

Radlett, Herts Evolution FLUSH window installation with ovolo putty Georgian bars to fanlights.

Bushey, Herts Evolution FLUSH timber effect bay windows, black cills, rectangle leads.

Interior shot showing Evolution FLUSH windows with period handles.

Evolution FLUSH timber replacement windows with feature single horizontal astragal bar, English Door Company "Nash" front door and sidelight. Bricket Wood, Herts.

Evolution FLUSH timber replacement windows

Hatfield Herts. Evolution STORM light oak finish window with feature ovolo putty Georgian bars.

Evolution Storm

Hatfield Herts. Close-up on Evolution STORM light oak finish window with feature ovolo putty Georgian bars.

Loudwater, Herts  Evolution STORM in cream.

Evolution STORM feature arched window.

Loudwater, Herts.  Evolution STORM cream oriel bay with ovolo putty Georgian bars.

Evolution STORM oriel bay window.

Evolution STORM 3 sided square bay in grey finish with ovolo putty Georgian bars.

Evolution STORM 3 sided square bay in grey

Evolution STORM 3 sided square bay in white finish with ovolo putty Georgian bars.

Evolution STORM 3 sided square oriel bay in white

Interior shot. Evolution STORM 3 sided square bay in white finish with ovolo putty Georgian bars.

Evolution STORM 3 sided square oriel bay in white.

Weybridge, Surrey. Full house refit in Evolution STORM Georgian style timber replacement windows

Evolution STORM full house refit.

Weybridge, Surrey. Outside view of Orangery. Evolution French door combination and roof lantern

Interior shot of orangery. Evolution STORM French door combination with ovolo putty surface mounted Georgian bar. Roof lantern.

Weybridge, Surry. Evolution STORM French doors and side panels with ovolo putty Georgian bars.

Weybridge, Surrey. Interior shot. Evolution STORM French doors and side panels with ovolo putty Georgian bars.

Interior shot showing Evolution STORM windows with period handles and peg stays.

Evolution STORM interior shot.

Interior shot. Evolution STORM with feature bespoke stain design. Monkey tail handle and peg stay.

Bespoke stain design.

Evolution STORM timber replacement windows

English Door Company "Nash" half glazed front door in anthracite grey with feature etched satin glass to toplight and escutcheon multi-locking rim latch. Chrome furniture, including the stylish doctor's knocker and polished round door knob add individuality and prestige to this entrance door.

EDC "Nash" Door

Solid "Maple" door in anthracite grey with escutcheon multi-locking rim latch from the English Door Company. Sleek chrome furniture, including the stylish ring knocker and polished round door knob, creates a distinguished entrance door to this new porch extension. 

EDC "Maple" door

We are loving this English Door Company "Ballingdon" door in agate grey, top glazed panels, black wrought iron door furniture and black escutcheon multi-locking rim latch. Make an impressive entrance to your home with our EDC premier range of front doors.

EDC "Ballingdon" door

Lovely example of the "Boxmoor" 1930s style door from the English Door Company in white with chrome lever multi-lock handle and letterplate. Standard midrail and complementing sidelight with feature lead and central diamond.

EDC "Boxmoor" door

Wow! What an amazing burst of colour this door gives to this property in Vicarage Road! We are LOVING this bespoke vibrant purple on our ever popular Boxmoor 1930s style door from the English Door Company. Finished off with a satin glazed toplight, black letterplate and escutcheon multi-locking rim latch, the customer wanted to enjoy the colour from both the interior and exterior.

EDC "Boxmore" door

English Door Company "Ballingdon" top glazed front door featuring bespoke fanlight with etched name, chrome furniture including multi-locking rim latch and pull knob. A rather stunning example of our premium range of front doors.

English Door Company

English Door Company "Waterford" 1930s style door in black wood effect with matching black wood effect frame, feature leads, wide midrail, chrome letterplate and rim latch multi lock. New build property in Paines Close, Pinner.

EDC Waterford

English Door Company "Waterford" 1930s style door in black wood effect with matching black wood effect frame, feature leads, wide midrail, chrome letterplate and rim latch multi lock. New build property in Paines Close, Pinner featuring black ali leaded windows throughout

english Door Company "Berwick" TUDOR door - white wood effect door into black wood effect outer frame. Feature ovolo putty Georgian bars. The whole house was fitted with Evolution TUDOR FLUSH windows throughout and this back door is the perfect complement.

EDC Berwick

English Door Company "Ashwell" door, half glazed in obscure glass. Black wood finish in black wood frame. Wide midrail with rustic wrought iron letter plate and ring knocker. Multi locking rimlatch. A very smart new frontage.

EDC Ashwell door

English Door Company Standen Georgian style front door with matching side panel. Ovolo putty face fixed Georgian bars, black furniture. Black and white Tudor finish.

EDC Standen Door

Rusilip, Middlesex. English Door Company Boxmoor front door in black wood finish with wide midrail, chrome furniture featuring multi-locking rim latch. Matching Evolution side window.

EDC Boxmoor 1930s front door

English Door Company "Waterford" front door in Light Oak finish to exterior, white woodgrain interior, chrome rim latch and letter plate. Side windows in white woodgrain Evolution Storm with feature leads.

EDC Waterford door

English Door Company "Ashwell" door in light oak finish featuring satin etched glass panels and textured wrought iron door furniture. Matching outer frame, threshold and weather bar for a truly seamless look.

EDC "Tewin" 1930s style front door. Bespoke colour and lead design to match original front door.

EDC Tewin 1930s front door

EDC "Boxmoor" 1930s door in Irish Oak finish. Black furniture and multi locking rim latch feature. Matching Evolution square leaded side panels.

St Albans, Herts. EDC "Boxmoor" 1930s door in bespoke orange finish. Chrome multi locking lever handle and letterplate.

EDC "Boxmoor" 1930s door in Irish Oak finish. Chrome multi locking lever handle and letterplate.

EDC "Boxmoor" 1930s door in bespoke purple finish. Chrome multi locking lever handle and letterplate.

EDC "Maple" 6-panel solid door in green finish with brass letterplate and multi locking rimlatch feature. Matching Evolution side panels in bespoke satin lead design.

EDC Maple solid front door

EDC "Lintin" cottage style door. Unusually small size. Wrought iron furniture and feature decorative stud detail.

EDC cottage door

Stable doors

EDC "Norton" back door in rosewood finish

EDC Norton resi door

English Door Company "Ballingdon" glazed door with wide midrail. Seer Green, Bucks.

English Door Company "Nash" top glazed door with standard midrail in black.

English Door Company Stormproof doors

Rehau anthracite grey windows for a sleek contemporary look. Dummy sashes throughout for equal sightlines.

Rehau anthracite grey windows

Rehau anthracite grey window

Rehau A+ white uPVC windows with feature rectangle leads. Dummy sashes throughout for equal sightlines. Smart new Visage composite front door.

Rehau A+ windows

Rehau windows with feature fanlights in face-fixed external Georgian bars. Dummy vented throughout for equal sightlines. Compare to the next door neighbours' windows.

Rehau windows

Rehau white uPVC simple porch consisting of Rehau resi door with midrail and letterplate, matching sidelight and return.

Rehau white porch

Rehau windows with feature face-fixed external Georgian bars. Dummy vented throughout for equal sightlines.

Rehau Georgian windows

White Rehau windows with feature internal Georgian bar fanlights. Unequal sightlines. Britdoors Homesfae Chester door in black with feature rectangle leads.

Oxhey, Herts. Rehau light oak foiled windows and porch. Dummy sashes to windows to create equal sightlines.

Light oak windows and doors

Light oak window

Light oak porch

Russell Road, Moor Park. Rehau white woodgrain foiled uPVC windows with feature rectangle leads.

Russell Road, Moor Park. Rehau white woodgrain foiled uPVC French doors.

Rehau French door combination

Deerings Drive, Northwood Hills - White uPVC windows with rectangle leads

Rehau white casement windows, dummy vented throughout for equal sightlines featuring black bay pole covers and black cills.

Rehau bay

Rehau oak bay

Rehau windows with Georgian bar. Homesafe composite door.

Plantagenent Rd

Bucks Hill, Herts Rehau uPVC leaded windows with black cills and Evolution Linton bespoke Cottage front door.

COTTAGE STYLE

Bucks Hill, Herts Rehau uPVC leaded bay windows with black cills and Evolution Linton bespoke cottage door.

Tudor style Rehau uPVC windows with black outer frames and white vents featuring diamond leads.

Black and White

White Rehau leaded windows with black bay poles and black cills.

Tudor style Rehau uPVC window with black outer frames and white vents featuring diamond leads.

Rehau black and white casement windows with feature arch. No dummy sashes.

Rehau Rio flush fit windows (Oriel bay) and English Door Company "Ballingdon" glazed front door. Seer Green, Bucks.

Rehau Rio flush fit French doors and sidelights. Seer Green, Bucks.

Rehau Rio flush fit windows and French doors with sidelights. Seer Green, Bucks.

Rehau Rio flush fit windows and English Door Company "Ballingdon" glazed front door. Seer Green, Bucks.

Rehau windows and doors

Origin 3-panel bifold doors in anthracite perfectly complemented by the Origin 3-pane aluminium window to this impressive kitchen extension.

Exterior: Amersham kitchen extension

Interior: Amersham kitchen extension

We are loving these 3-panel dual colour black aluminium Origin bifold doors with integral inscreen blinds and complementary Aluk black aluiminium windows at this property in Chesham, Bucks. Wow! :-D

Chesham, Bucks.

Chesham, Bucks, interior

Wow! Stunning 6-panel bifold door in agate grey.

Complete property remodel exterior.

Complete property remodel, kitchen.

Origin 3-panelled bifold door in anthracite grey with brushed stainless steel 2-part lever handle. Complementary in-screen Venetian style blinds (inside the sealed units) provide privacy and screening. Very nice looking installation!

Origin bifold door with inscreen blinds

3-panel bifolding door in standard white with black outer frame and lever handle. The rest of the house was refitted in Evolution FLUSH Tudor (black and white) windows and doors, and this bifold complements the look perfectly.

Origin bifold door

3 x sets of Origin bifold doors, 1 x 6-panel and 2 x 4-panel. Dual colour black exterior white interior. Evolution FLUSH Tudor (black and white) windows with feature ovolo putty external Georgian bars and feature gable window.

Origin bifold doors

3 x sets of Origin bifold doors, 1 x 6-panel and 2 x 4-panel. Dual colour black exterior white interior. Evolution FLUSH Tudor (black and white) windows with feature ovolo putty external Georgian bars and feature gable window

Dual colour bifold doors in anthracite grey with white interior. Glazed in Reflex Blue solar control glass. Complementary matching triangular gable toplight. 1 x 4-panel door and 2 x 3-panel doors. Feature stone cornices throughout.

Dual colour bifold doors in anthracite grey with white interior. Glazed in Reflex Blue solar control glass. Complementary matching triangular gabled toplight. 1 x 4-panel door and 2 x 3-panel doors. Feature stone cornices throughout.

Dual colour bifold doors in anthracite grey with white interior. Glazed in Reflex Blue solar control glass. Complementary matching triangular gable toplight. 1 x 4-panel door and 2 x 3-panel doors.

Russell Road, Moor Park. White aluminium 4 panel and 3 panel bifolding doors.

Old Woking, Surrey. 4-panel white aluminium bifolding door.

Bifold doors to extension

Bifolding doors

Harp Windows Ltd

Long established (1989) & family run, we offer an unrivalled choice of top quality bespoke windows, doors & conservatories. No hard sell. Watford (01923) 231111.

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