See all photos

Sealsixty Ltd

10/10

Basingstoke, Hampshire

£1,000 guarantee T&Cs apply

Checkatrade member since February 2019
5

Request a quote

Website

Skills

Cavity Wall Insulation
Cavity Wall Insulation Removal
Loft Insulation

Customer Reviews

Write a review

10 /10

Based on 5 reviews over the past 12 months

Quality of work

Reliability

Communication

Reviews (211)

10
Loft Insulation
Posted 03 October
Clear out of loft boarding and insulation. Lay new insulation and boarding with additional storage l
The team at Seal Sixty were very engaging from the outset. The site visits were extremely helpful to outline the options and best practice and the to confirm the work that would be done. The installers, Chris and Jack were brilliant. They worked extremely hard and were very professional - and they were very personable. I would totally recommend Seal Sixty.
Verified reviewerJob location: LU6
R
Peter F
10
Loft Insulation
Posted 03 October
loft insulation and boarding
Really good communication throughout, tradesman turned up on time and were very professional and friendly. Would definitely recommend
Job location: PL21
R
Carly P
10
Loft Insulation
Posted 03 February
Highly recommend this company
Very happy with the service received. On visiting my house to discuss and survey what would be required to help with condensation, I was advised to have trickle vents, and a fan installed in the bathroom. This worked really well and eliminated any damp patches on the ceilings. Later down the line I had new fascias put in by a different company, which must have dislodged the loft insulation, so Sealsixty came and surveyed again and recommended fitting eaves trays and repaired and tidied the loft mineral wool. Hopefully this will stop any more problems. Thank you, highly recommend.
Verified reviewerJob location: PL25
10
Loft Insulation
Posted 03 December 2025
Very professional service
Sealsixty did an excellent job of insulating our loft and installing a storage area above the insulation. They bagged and cleared all the old, filthy material and also lined the roof at a very competitive price. I have no hesitation in recommending them to prospective customers.
Verified reviewerJob location: RH1
10
Cavity Wall Insulation
Posted 03 December 2025
Impressive service at a great price.
Enquired on Friday, survey following Monday and cavity wall installation on Thursday of the same week. I don’t think that can be beaten. When you match that with reasonable cost and guarantees, I think that presents a magical formula. All this after struggling to find someone to do the job, accepting a quote from a competitor, eventually, only for it to be doubled by them. I wish I had found Sealsixty a long time ago.
Verified reviewerJob location: PL25
10
Cavity Wall Insulation
Posted 01 November 2025
Great service, highly recommended
We had been looking to get cavity wall insulation installed for some time but have struggled to find companies that install as most only undertook extractions. We wanted to get the work done before the weather changed and found Sealsixty on Checkatrade. The quote process was easy, their email communication was great, the works (extraction of old material and installation) were completed over 2 days and the installers were very professional. The difference in our home's warmth level was immediately noticeable. We don't need the heating on as long now and the heat is retained for far longer.
Verified reviewerJob location: TQ5

Photos

+42

Company Info

Owner

Mr Sinan Bulluroglu

Ltd Company

7 years on Checkatrade

VAT Registered

Yes: 279943831

Domestic WorkCommercial WorkFree EstimatesCards AcceptedInsurance Work Undertaken

Welcome to SealSixty, where craftsmanship meets community spirit. As a proud family-run enterprise we take immense pride in our local roots and the personalized touch we bring to every installation.

At SealSixty, we're not just about providing exceptional service; we're about building lasting connections within our community. Our local teams aren't just skilled professionals; they're your Neighbours, deeply invested in understanding and meeting the unique needs of our local area.

As a family-run business, integrity, reliability, and a commitment to excellence are at the core of everything we do whilst approaching each project with precision and care.

Choosing SealSixty means choosing more than just a service provider, where experience, professionalism and family values come together to meet your expectations.

We offer a range of insulation supply and install services, including loft insulation, cavity wall insulation and ventilation upgrades to include smart air brick installations.

We are proud members of The IAA (CIGA), Trustmark and PAS2030 for your added peace of mind!

We are now offering insulation supported by Government Funding for loft and cavity wall insulation under "GBIS" The Great British Insulation Scheme. (No benefits or low income required)

The 3 conditions are.