Mr Thomas Mongan

Hello I am Thomas , the proud owner of National Roofing and Building, LTD A little bit About National Roofing &amp; Building LTD Welcome to National Roofing &amp; Building Limited the top roofing company in Hertfordshire ,and North west London providing exceptional roof repair services for residential and commercial properties. We understand that a damaged roof can cause significant stress and inconvenience, which is why our team of experienced professionals is dedicated to delivering fast, efficient and reliable solutions. Our range of services includes roof repairs, replacements, installations, and maintenance. We use only the best quality materials and techniques to ensure that your roof is durable and long-lasting. Our team is equipped with the latest tools and equipment to provide a quick and efficient service, and we always strive to complete the job on time and within budget. If you have noticed any issues with your roof, such as leaks, damage or wear and tear, don’t wait until it’s too late. Contact us today for a free consultation and let us take care of all your roofing needs. Our friendly and knowledgeable team will be happy to answer any questions you may have and provide you with a tailored solution to meet your specific requirements. At National Roofing &amp; Building Limited, we are committed to providing our clients with the highest quality of service and workmanship. Our focus is on customer satisfaction, and we take pride in the fact that much of our business comes from referrals and repeat customers. Let us help you protect your property and ensure that your roof is in top condition for years to come. Main work we undertake Roofing ,Flat Roof’s, Re-pointing, Guttering and all other aspects of roof lining AvailabilityWe are always contactable via phone throughout the week, and Saturday until 4pmIf for any reason you are unable to get through to us please leave me a message and a colleague will get right back to you.(Please leave your phone number in the voicemail) Thank you for taking the time to consider our company’s profile, I look forward to hearing from you. National Roofing &amp; Building LTD

2025

Some before, and after

2024 Jobs

Before and after

Previous projects

National Roofing & Building LTD

This company recently carried out a roof refurbishment of my property. The advice given at all times was honest and professional. The team arrived over 3 days to complete the work and were polite, friendly and were always busy. They tidied up and left no mess whilst the work was ongoing and on completion. They answered any concerns I had over the work. I could see that only the finest materials were used for the refurbishment. After the work was completed, due to concerns from a neighbour, we had the work inspected by the local council surveyor and he was fully satisfied with the work

My roof refurbishment

We recently had some soffit repairs done because of rotting wood. While carrying out the work, the roofer spotted a couple of additional issues we hadn’t noticed. They took the time to show us videos and explain everything clearly, which made it much easier to understand what needed doing and why.

The work was completed quickly and to a very high standard. A large team arrived and worked efficiently, getting everything finished without any problems.

The price was very fair for the amount of work carried out. Overall, a straightforward and positive experience. Professional, reliable and easy

Great work, done quickly and priced fairly.

Tom and his team were able to get on with job straight, scaffolding and a review of what was required in less than 24hrs.  I was kept informed throughout the work by telephone videos and photos. The job was completed as scheduled on price and all the rubbish and mess removed.  The work is guaranteed for 20yrs

My property had a new roofing system, and pointing round the chimney stacks.

The company carried out a full roof refurbishment including our garage roof
Work was carried out quickly with scaffolding coming up and work carried out in a few days
Area was left clean and tidy 
Good communication from the owner, advice on necessary work and progress of job

Roof Refurbishment

Tom was great from the get go. Completely honest about what needed to be done , kept the cost down as much as he could. Highly recommend this company.

Great roof repair!

Communication with Tom was clear and straightforward and he responded quickly to messages and calls. He and his team were efficient, timely and professional. The team were very clean, tidying up at the end of the day and then a thorough clean at the end.

Efficient and Professional

Average score based on 25 reviews in the last 12 months

Services offered by National Roofing & Building LTD, working as Damp Proofer, Fascia / Soffits / Guttering, Roofer in Hertfordshire etc

National Roofing & Building LTD | Damp Proofer | Harpenden | Checkatrade

Hello I am Thomas , the proud owner of National Roofing and Building, LTDA little bit About National Roofing &amp; Building LTDWelcome to National Roofing &amp; Building Limited the top roofing company in Hertfordshire ,and North west London providing exceptional roof repair services for residential and commercial properties. We understand that a damaged roof can cause significant stress and inconvenience, which is why our team of experienced professionals is dedicated to delivering fast, efficient and reliable solutions.Our range of services includes roof repairs, replacements, installations, and maintenance. We use only the best quality materials and techniques to ensure that your roof is durable and long-lasting. Our team is equipped with the latest tools and equipment to provide a quick and efficient service, and we always strive to complete the job on time and within budget.If you have noticed any issues with your roof, such as leaks, damage or wear and tear, don’t wait until it’s too late. Contact us today for a free consultation and let us take care of all your roofing needs. Our friendly and knowledgeable team will be happy to answer any questions you may have and provide you with a tailored solution to meet your specific requirements.At National Roofing &amp; Building Limited, we are committed to providing our clients with the highest quality of service and workmanship. Our focus is on customer satisfaction, and we take pride in the fact that much of our business comes from referrals and repeat customers. Let us help you protect your property and ensure that your roof is in top condition for years to come.Main work we undertakeRoofing ,Flat Roof’s, Re-pointing, Guttering and all other aspects of roof liningAvailabilityWe are always contactable via phone throughout the week, and Saturday until 4pmIf for any reason you are unable to get through to us please leave me a message and a colleague will get right back to you.(Please leave your phone number in the voicemail)Thank you for taking the time to consider our company’s profile, I look forward to hearing from you.National Roofing &amp; Building LTD

From slate replacement to large new roof installations, we specialise in all aspects of slated, tiled, flat and fibre glass covered roofs. We only use high-quality Materials

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