Endorsed by Which?

Slate Insulations Ltd

4.9

24 Reviews

Opening Hours
Today - 08:00–18:00
  • Monday 08:00–18:00
  • Tuesday 08:00–18:00
  • Wednesday 08:00–18:00
  • Thursday 08:00–18:00
  • Friday 08:00–18:00
  • Saturday 08:00–18:00
  • Sunday 08:00–18:00

Why you can trust this trader

After undergoing rigorous assessment to become endorsed, every Which? Trusted Trader agrees to our Code of Conduct. This gives consumers the reassurance that they have the best possible protection and adds an extra layer of security to ensure best practices and procedures are followed. Which? fully investigates any breaches and will take any necessary action to ensure consumer protection.

About

We are experts in cavity wall insulation, cavity wall insulation removal, loft insulation, loft boarding, room in roof insulation, chemical damp proof course injection, weathershield masonry protection, re-pointing, External wall insulation, rendering, internal wall insulation, plastering, solar panel maintenance, bird protection for solar PV. Slate Insulations Ltd have many accreditations such as being a BBA approved installer, PAS2030 green deal installer for cavity and loft insulation.CHAS, ACCLAIM, CONSTRUCTIONLINE, NICEIC registered. CIGA approved for SIG, Insta fibre, Rockwool insulation. BBA approved installer which can undertake works though funding streams such as ECO and HCRO funding for funded cavity and loft insulation.
Slate Insulations is a Hampshire based company which was incorporated in 2013 to carry out cavity and loft insulation to help homeowners save energy in their homes. we have been going for seven years now and going from strength to strength always expanding our portfolio of works.

What we do

  • Insulation installers

  • Builders

  • Cavity wall insulation

  • Plastering

  • Renewable energy

  • Waterproofing

  • Groundwork contractors

  • More Services

    • cavity wall extraction
    • chemical dpc inject
    • solar bird nesting

Customer reviews

Why you can trust these reviews

All reviews are verified as being genuine and a true customer of this trader.

How can we be so sure?

100% of the reviews we publish have been through our stringent moderation process.

4.9
24 reviews
Customer Service
5.0
Quality
5.0
Value
4.9
Sort by
Warm Walls
Customer Service
Quality
Value
On day 1, 3 October 2023, holes drilled in lower elevations of front, side & part rear. Then extraction hoses were inserted into the holes to extract the old ineffective rockwool insulation. Due the fact that there was damp at lower levels it was decided by the Operatives not to install new Rockwool until a few weeks later when the cavity had dried out. The installation of the new Rockwool was effected on 25 October. On both days the outside areas were cleared of debris. The work was professionally carried out. Despite being based in Portsmouth the job was undertaken. I have no hesitation in recommending Slate Insulations.
Customer in Posted on 14/11/2023 , work completed 03/10/2023
Great experience - Would recommend
Customer Service
Quality
Value
Found Slate Insulations online. Lovely staff were communicative and polite in organising the survey and getting the initial information. Workers that carried out the work were professional and cleaned up after themselves. Would recommend - good value for money and good experience.
Customer in Hampshire Posted on 30/05/2023 , work completed 21/04/2023
Easy to work with, Quick service and very Reasonable
Customer Service
Quality
Value
I used slate insulations to review my loft insulation and cavity wall insulation. They work extremely helpful and quoted a very reasonable price. Their workman were excellent and very friendly. They manage to avoid some of the work quoted for and thus safe cost which I was very impressed with. Would definitely recommend.
Customer in Kent Posted on 12/05/2023 , work completed 21/04/2023
Easy to work with, quick and efficient
Customer Service
Quality
Value
The team were really easy to work with and did the job fast and with no issues whatsoever. After ringing around a few other vendors these guys came back quickly and were able to come and do a survey pronto. We were really happy with the work conducted.
Customer in Surrey Posted on 27/07/2022 , work completed 26/07/2022
Loft insulation and boarding
Customer Service
Quality
Value
The three guys who arrived to do the job were lovely, polite and introduced themselves immediately. They worked very hard in extreme temperatures to complete the job in two days. They did an amazing job including clearing all the old insulation first followed by a double layer of new insulation then boarded the centre of the area. We are really pleased with the completed work.
Customer in Wiltshire Posted on 26/06/2022 , work completed 17/06/2022
Party Cavity Filled, Good job and great sound insulation
Customer Service
Quality
Value
The guys did a good job, finished our three bed semi's party wall in a morning. I've been really impressed and happy with the added level of sound insulation. No regrets, trustworthy company, very pleased.
Customer in Somerset Posted on 16/06/2022 , work completed 11/06/2022
Probably Too Busy!
I emailed Slate Insulation on 18th. October, following a search of Which Trusted Traders, on 22nd. November they finally replied with a quotation. Not what I consider good customer service, got fed up waiting and received two other quotations promptly and agreed the job with one of them and they will be starting the work in two weeks time.
Customer in Oxfordshire Posted on 23/11/2021 (Reviewer did not use service)
The trader replied (on 22/12/2021)
We sincerely apologise for the late reply with your quotation. We have experienced staff shortages due to COVID and have been trying to catch up with the huge amount of enquiries we have received over the last few months on less than half of our workforce. Thank you for your feedback.
Insulation for a rental property
Customer Service
Quality
Value
Communication on the whole was very good. Telecon with Carl inspired complete confidence in the Company’s competence and knowledge in dealing with my requirements for loft and cavity wall insulation. Especially helpful as the job was for a small property I rent out about 80 miles from me and about 40 from SI’s base. I contacted them because they are a Which trusted trader and government approved for CW insulation. The quote was very fair and in line with what I expected. The quote and T&Cs included a commitment to pay 50% before completion. This caused several days anxiety until it was resolved as I had no bank details. It transpired that the invoice was below the necessary threshold. A miscommunication that could have been avoided. The guys arrived around the expected time, were courteous, explained what they were going to do and got on with the job, inside, laying down carpet protector and taking care not to leave marks on the walls. I was shown a photo of the loft insulation so I didn’t have to clamber up the ladder to inspect it. The holes in the outside walls were filled in neatly. They took all the debris away as agreed and cleared up satisfactorily. I would definitely recommend Slate Insulation.
Customer in Hertfordshire Posted on 01/11/2021 , work completed 30/10/2021
Friendly service and a. Good job
Customer Service
Quality
Value
A bit slow responding with a quote but it was a very busy time. Worth the wait as they showed up as promised, were very helpful and friendly, answered any questions and cleaned up when finished. A great job all round.
Customer in West Sussex Posted on 29/10/2021 , work completed 26/10/2021
Courteous, competent and professional
Customer Service
Quality
Value
The initial survey visits from Carl Slate himself seemed very thorough and he gave me lots of info about what would be done and the relative benefits of any options. He gave a definite sense of competence and professionalism. The installation team were also very friendly, polite and efficient. They cleared up after themselves and left the site tidy. The holes that they had drilled for the installation were almost invisible by the time the mortar had dried. Overall, very pleased with the service.
Alan in Hampshire Posted on 28/08/2021 , work completed 26/08/2021
Roof Insulation
Customer Service
Quality
Value
Very helpful office lady (Kelly) the work completed without any fuss clean and tidy can not give the company enough praise.
Peter in West Sussex Posted on 03/07/2021 , work completed 14/06/2021
Excellent loft insulation by Slate Insulations Ltd
Customer Service
Quality
Value
Carl and his team were excellent. On time and very efficient. Work carried out in half a day. Loft insulation and installation of retractable ladder. Excellent clean up. Would highly recommend.
Anne in Hampshire Posted on 08/05/2021 , work completed 07/05/2021
Loft and cavity wall insulation.
Customer Service
Quality
Value
The job went very smoothly from quoting to completion. The team were very professional, polite and COVID aware, taking all the necessary precautions. The job involved fitting cavity wall insulation, then removing a poorly laid loft floor, removing the old insultation and installing new and finally, relaying a new substantial floor. We are very pleased with the finished result and would happily recommend Slate Insulation to anyone who asks.
Customer in Hampshire Posted on 20/01/2021 , work completed 19/01/2021
Very prompt and efficient - did a reasonable job of cleaning up after themselves.
Customer Service
Quality
Value
Karl arrived promptly to quote and left me to think about it for a few days before ringing me to see if I wanted to go ahead. The job was not straightforward but he knew all the answers to my questions and even a few that I had not even considered! There was no pressure whatsoever to "sign on the day for a discount". We agreed a date for the job and he and his two guys arrived within parameters and got straight on with the job. I felt confident enough to leave them to it and went out. I came back later and they were still working away but finished about when Karl said they would. There was no immediate demand for payment - I offered but was told to await the invoice from the office. This happened the next day or so and I immediately settled. I haven't noticed a great difference but I wasn't really expecting to and this is a new house which I have just moved into so I don;t really know what it was like to live in before. I had cavity wall insulation at my previous home and was very pleased.
Customer in Hampshire Posted on 08/05/2019 , work completed 30/04/2019
My review
Customer Service
Quality
Value
Arrived early and got on with the job.
Katerina, Middlesex Posted on 26/06/2018 , work completed 26/06/2018
Exceptional
Customer Service
Quality
Value
Kind, courteous and thorough installation and follow up works. Skilled and efficient installers a great service.
Neil, Hampshire Posted on 26/06/2018 , work completed 26/06/2018
Cavity wall installation
Customer Service
Quality
Value
So pleased with the team as they are really nice lads. Worked neat and efficient. They explained the process and couldn't be more helpful. Would highly recommend using this company to anyone.
Darren, West Sussex Posted on 21/06/2018 , work completed 21/06/2018
Cavity wall insulation.
Customer Service
Quality
Value
Cavity wall insulation install for a very large block of flats at one of our sites. We have used Slate Insulations many times, as they are very good value, and always carry out their works tidy and efficiently. I have no hesitation in recommending this company for any insulation measures. I have no doubt we will carry on using Slate Insulations.
Kulraj, Surrey Posted on 20/06/2018 , work completed 20/06/2018
Loft insulation installation.
Customer Service
Quality
Value
The team arrived on time, professional and clean. Such a great price considering the size of my loft and the amount of insulation that's now up there. You can really notice the difference inside my home as its so much warmer new than before. Really happy I chose this company and highly recommend.
Tim, Hampshire Posted on 18/06/2018 , work completed 18/06/2018
Professional and efficient
Customer Service
Quality
Value
Carried out loft installation in a fast and professional manner. They kept everything tidy as they worked. Very recommended.
Lewis, Hampshire Posted on 15/06/2018 , work completed 15/06/2018
Very professional
Customer Service
Quality
Value
Loft insulation. Put down new boards on floor. Completed job quickly but tidied up behind them & helped move a couple of bits out of the loft we couldn't move. Very pleased with work done. Friendly & efficient workers.
Vivienne, Hampshire Posted on 14/06/2018 , work completed 14/06/2018
Damp treatments
Customer Service
Quality
Value
I had some mould on my ceilings in three upstairs rooms. Slate Installations treated the mould first then painted the ceilings and coving with anti mould paint followed by white ceiling paint to finish. Dust sheets were used throughout and very happy with the results. Company are due back to install loft insulation this week.
Luis, Hampshire Posted on 11/06/2018 , work completed 11/06/2018
Professional & knowledgeable
Customer Service
Quality
Value
Carl and his team installed the external wall insulation to a very high standard and I 'am already feeling the difference. From start to finish, Carl and his team were on hand to answer my questions and kept me well informed. Would definitely recommend.
Michael, Kent Posted on 21/11/2017 , work completed 21/11/2017
Highly recommended
Customer Service
Quality
Value
Darrell was extremely hardworking and did an excellent job. He was always very prompt despite travelling a long distance. The job took longer than anticipated but he was flexible enough to be able to complete it and still tidied up very well. Can't recommend him and the company highly enough.
gay slater Posted on 12/03/2017 , work completed 12/03/2017
Highly recommend, fast efficient and very professional
Customer Service
Quality
Value
I used Slate Insulations Ltd for Cavity Wall and Loft Insulation. There was a very quick turnaround from my initial request to installation. I was communicated to the whole way through the process so I knew exactly what was going on. The team are very professional, fast and efficient in all aspects. Can't thank them enough for the great work.
Rachel Posted on 21/02/2017 , work completed 21/02/2017