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Local thermal insulation specialists near me | Rated People in Porthmadog, Gwynedd

There are 22 Thermal Insulation specialists in Porthmadog, and last month we helped homeowners get quotes for their home improvement jobs.

Browse Thermal Insulation specialists in Porthmadog, Gwynedd

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With over 20 years combined in the building trade and serving the whole of the UK, we are a family run business that offers all types of general building maintenance. We are specialists in all types of conservatory roof replacements, repairs, leaks, cleaning and insulation keeping your conservatory warm in the winter and cool in the summer, saving huge amounts on energy/heating costs. We also offer loft insulation and boarding

Latest homeowner review

Reviewed by Stephen on 24/6/2025

LR great company to work with, excellent service from start to finish, Lee and his sons did a excellent job at a competitive price, would have no problem recommending them to anyone.

M G Roofing

Thermal Insulation in Porthmadog

M G Roofing & Building provides a professional and reliable service. All aspects of roofing & building work undertaken & carried out to the highest standard. No obligation quotations & a quality service at a fair price.

Latest homeowner review

Reviewed by Paul on 23/2/2016

In total 4 ridge tiles were broken, old tiles kept to show us the fault. New tiles in place and look very good. Extra work requested on the conservatory to fix leaks, still waiting to see if this has worked, but feel confident. A very good job done in the required time.

The Green Machine

Thermal Insulation in Porthmadog

(238) Read reviews

The Green Machine will provide you with professional high standards of workmanship with many years of experience and many happy customers so choose us with confidence.

Latest homeowner review

Reviewed by Graham on 30/7/2025

Ben was quick, efficient, hard working snd cleaned up perfectly. We would recommend him for similar jobs.

A.Gallagher & Son

Thermal Insulation in Porthmadog

A. Gallagher & Son provide services across North and Mid Wales and the North West. We employ only local specialist tradesmen for slating, tiling, flat roofing, lead work, fascia and gutters and solar PV. We are able to take on works of any size to the most complex designs and specifications. Our Roofing Services Include: New Roofs Roofing repairs Re roofing Slate and materials Solar panels Other general building Get FREE quotes and friendly service. Members of National Federation of Roofing Contractors Velux approved installers We believe high quality standards of work is an essential key in the companies growth and development.

Latest homeowner review

Reviewed by Steve on 24/12/2024

ADKbuilding

Thermal Insulation in Porthmadog

Latest homeowner review

Reviewed by James on 23/1/2017

I'd highly recommend Alan and Kieron from ADK Building. They installed our bathroom to a very high standard from the plumbing through to tiling, installing underfloor heating and constructing custom made shelving to overcome a challenging job. Alan is very friendly, helpful and polite, he discussed the requirements in detail and any unforeseen problems were explained and dealt with. The work area was left clean and tidy each day.

At P.E.P Construction ltd, we offer a wide verity of service in the construction sector, from anything as small as you can think to as big as you want and as high end From groundwork’s to Extention all the way to new builds look no further, we have a team of trades all under one roof l, with a professional and friendly service start to finish look no further

Latest homeowner review

Reviewed by damian on 5/12/2024

MASTER

Thermal Insulation in Porthmadog

We are a period/listed property restoration company. We specialise in traditional materials and methods. - Lime rendering & plastering with horse hair. - Lime pointing. - Masonry repairs. - Paint removal using the Thermatech hot steam cleaning system. - Brick/stone feature walls. - lime wash - Breathable Painting. - lime plaster/render We often work with conservation officers from the authorities to ensure our works are of the highest standards.

Latest homeowner review

Reviewed by Alexandra on 10/5/2025

Marcus and his team did a great job for us reseating our period porch stone paving and repointing with lime mortar, including matching a reclaimed stone slab to replace a broken one

GMS

Thermal Insulation in Porthmadog

Gareth, the proprietor of GMS is a qualified wood machinist by trade and has over 25 years’ experience working within the construction industry. Gareth first started the business in 2005 with a view to provide clients across North Wales and Cheshire with kitchens. In the last 10 years the business has diversified and now accommodates a scheme of works within construction from kitchens to bathrooms, gardens to bedrooms, fire and flood damaged properties and more. Gareth employs several staff and subcontracts to NICEIC registered Electricians and GAS SAFE registered gas engineers. Therefore, GMS can offer project managing and the client only needs to converse with one trade [GMS] rather than multiple. Thus, taking the stress out of the job.

Latest homeowner review

Reviewed by Mark on 23/2/2018

Great communication and work carried out to a high standard.

Our business is built on quality, reliability with a professional and responsive approach. Our handpicked team of qualified tradesmen specialises in property improvements, reactive maintenance and small building projects.

Latest homeowner review

Reviewed by Mandy on 26/1/2016

Excellent value for money. Professional and quality service.

Haus Company

Thermal Insulation in Porthmadog

Haus Company specialise in exterior coatings, silicone & acrylic render & textured spray render.

Latest homeowner review

Reviewed by Leslie on 2/7/2025

Only two companies expressed an interest in my exterior decorating job, the first being situated +/- 50 miles away which, logistically seemed less than ideal and certainly not local. The second, Haus Company, was closer to my location and was awarded the job. The team of two, Robbie and Paddy, worked hard during a torrid heatwave and completed the work in 5 days as planned. The finished work more than lived up to my expectations in terms of quality and I'm happy to recommend Haus Company.

Celtic Heritage is an established company with over 30 years experience in the construction and double glazing industry. We benefit from a level of knowledge which enables us to give in depth, and valuable advice to our clients.

Latest homeowner review

Reviewed by Lee on 5/12/2017

Great company and a good team of Lads.

All building Land scaping Building work flagging Walls Extensions Block paving / Indian stone General maintenance Site clearances All aspects of building work Rendering Plastering Painting Roofing Trees pruning / chopped Thinning Crowning Felling Stump removal Polarding Gutters cleaned replaced sealed rejoined Roof work tiles,slates Flat roofs Facias Cladding All building work undertaken Jet washing Pointing Building work Garden improvements Flagging Brick work Landscaping General building Artificial grass Clearances jobs homes garden factory’s For free quote call now over 25 years experience all work is fully insured public liability waste transfer licence thanks for looking we have some pics uploaded if you would like to see some of our work more pics available ask for website details

Latest homeowner review

Reviewed by Christine on 4/7/2025

So confusing couldn't make hide nor hair of it

Latest homeowner review

Reviewed by Cheryl on 27/7/2024

They ruined my kitchen cut holes where there didn't have to be holes I'm disabled and stuck ìn bed They left me with no water or electricity an noway to cook for a week in this heat I've had to buy new cupboards an pay à plumber electrician an joiner as well to fix there mess if I could give them no star I would

Latest homeowner review

Reviewed by Vicki on 11/9/2010

He did phone ahead to say he was 15 minutes away, but it was actually an hour. Everything else was OK, got a quote, and he answered the questions I asked.

I GROUP LTD

Thermal Insulation in Porthmadog

We a maintenance business based in the North West of England. We cover the local area and UK. We provide services to domestic and commercial customers. Providing internal and external services. Some of our services Bespoke and sourced wooden gates. Fencing Security bollards General maintenance Painting The list goes on.

Latest homeowner review

Reviewed by Lilian on 5/8/2025

JG Roofing

Thermal Insulation in Porthmadog

Would you all kinds of roof repairs gutter repairs cleaning gutters alter alter building over cause fully guaranteed

Latest homeowner review

Reviewed by Baiba on 27/8/2024

Everest

Thermal Insulation in Porthmadog

Latest homeowner review

Reviewed by kanu on 21/3/2013

Total waste of my time. Clearly advertised for a tradesman to install my alarm and they sent alarm salesmen instead. I will have use the yellow pages next time.Thanks.

Rated People

Thermal Insulation in Porthmadog

Loft conversion specialist, with 25 years worth of experience.

Sabre Assessing LTD

Thermal Insulation in Porthmadog

Curve Management Services Ltd offers a service designed specifically to its customers requirements. Our services include leak detection, leak repairs, damp investigations, building envelope surveys and property drying. Our experienced technicians undertake all work. Our comprehensive building knowledge and unmatched experience in our field of expertise allows us to complete any job from start to finish. Our team of skilled technicians undertake work under the guidance of our experienced project managers. We can undertake private and insurance work via our in-house insurance claim specialist.

HJP Air Conditioning

Thermal Insulation in Porthmadog

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Recently completed jobs

Here's what's been happening in and around your area

the cottage is detached 4 bed...

the cottage is detached 4 bed , its over 200 years old , a lot of the walls are slate and some are several foot thick , others are block . its a...

old slate cottage - damp...

old slate cottage 200+ years old needs red amp proofing I think ! it's in morfa Bychan just outside Porthmadog

Internal refurb

New kitchen and bathroom, plastering, painting etc. No structural work. Can supply electrician.

the cottage is detached 4 bed...

the cottage is detached 4 bed , its over 200 years old , a lot of the walls are slate and some are several foot thick , others are block . its a...

old slate cottage - damp...

old slate cottage 200+ years old needs red damp proofing I think ! it's in morfa Bychan just outside Porthmadog not sure if the cost is right. i have...

Damp in corner of living room,...

Need someone to advise me as to what is going on, where damp is coming from and quote me on fixing it please.

Damp 30 cm x20 cm near...

Damp near skirting after rain external wall has deteriorated recently . Need solving quite soon please .

Damp 30 cm x20 cm near...

Damp near skirting after rain external wall has deteriorated recently . Need solving quite soon please .

Saw dust mixed with building...

Saw dust mixed with building material and remnant of a glasshouse

No signal to sky box ...

No signal to sky box Relatively poor signal to normal TV

How our service works

  1. Create a job - it's free

    We'll connect you with the right tradespeople, from over 30 different trades.

  2. Get quotes

    Up to 3 tradespeople can provide a quote, but on average you'll get 1-2.

  3. Check ratings

    Look at each tradesperson's profile to see their ratings and reviews.

  4. Pick a tradesperson

    Use our homeowner checklist for extra tips on choosing a tradesperson.

  5. Job done

    Leave a rating for your tradesperson based on quality, reliablity and value.

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