01Damp & Property SpecialistsDamp specialists · South Wales
Damp proofing, condensation control, insulation & ventilation specialists
Based in Tonyrefail, working across South Wales, West Wales, Bristol, Devon, Hereford and Gloucester. Surveys are free.
Established
1984
Experience
40+ years
Surveys
Free
Area
Wales & West
MEET THE DIRECTORS
Family Run. Experienced. Trusted.
CPH Interiors is a family-run business built on experience, quality workmanship and a commitment to looking after every customer.
With decades of combined experience, our team provides dependable workmanship and straightforward advice across South Wales and the surrounding areas.
CPH Specialist
Cork Plastering & Insulation
A smarter approach to insulation and breathable walls.
Cork plaster is a natural insulation and plastering system in one. Applied to internal walls and ceilings, it helps older and traditional properties stay warmer and drier — a modern alternative where conventional insulation systems may not be suitable.
Find Out More
One of our specialist services — rarely offered by local contractors.
- Natural and breathable material
- Helps improve thermal performance
- Suitable for older and traditional properties
- Can help manage moisture within walls
- Combines insulation and plastering in one system
- A modern alternative where conventional insulation may not suit
Experienced team
40+ years on the tools.
Free surveys
No-obligation advice.
Damp & condensation
Insulation and ventilation too.
Wales & West
Based in Tonyrefail.
Specialist services
What we do
Not sure what the problem is?
Which problem is it?
Pick the signs that match what you are seeing and we will point you to the right service.
Damp Proofing
Identify the cause of damp and provide the right treatment.
- Peeling paint or wallpaper
- Damp patches low on walls
- Salt staining or tide marks
Condensation Control
Practical solutions to reduce moisture and improve airflow.
- Streaming windows
- Black mould on walls or frames
- Musty rooms
Insulation
Improve warmth, comfort and energy efficiency.
- Cold walls or ceilings
- Condensation on cold spots
- Rooms hard to heat
Ventilation
Improve airflow and help control excess moisture.
- Steamy bathrooms or kitchens
- Lingering cooking smells
- Condensation after showers
Our work
Real projects
Damp Proofing — treated, then replastered. Drag to compare.
Damp Proofing
Stripped back to brick before tanking.
Plastering
Replastered and ready to decorate.
Condensation
Window reveal after condensation work.
Insulation
Opened up to improve insulation.
Additional services
Other work we cover
- Affordable damp proofing
- Chimneys
- South Wales damp proofing experts
- Condensation control
- Dry lining
- Building maintenance & repairs
- Cavity walls
- Storm damage repairs
- Moisture and damp proofing South Wales
- Timber treatments
- Rendering
- Damp proofing Bridgend
- Wall tie replacement
- South Wales damp prevention
- Wood preservation
- Fascias & soffits
- Drywall installers
- Brick and stone repointing
- Cardiff damp proof specialists
- Damp proofing Swansea
- Gutter repairs
- Guttering services
- Plastering & screeding
- Pointing
- Woodworm & dry rot control
- Domestic maintenance & repair services
- Damp proofing South Wales
- Damp proofing Cardiff
- Damp proofing Newport
- Bridgend damp proofing solutions
- Newport damp proofing services
- Swansea damp protection
- Damp and mold solutions
- Building Refurbishments
- Building Renovations
- Property Maintenance
- Property Refurbishment
- Insulation specialists
Customer feedback
What people say
100% positive feedback on MyBuilder
“Craig and Cody did a fantastic job. They identified the damp problem, explained the process and finished to a high standard with no mess. Highly recommend.”
“First class job on my bathroom damp problem. Craig was courteous, professional and clean. I cannot recommend him highly enough.”
“Found CPH on MyBuilder for damp proofing in Tredegar. Craig talked me through everything, kept me updated and genuinely cared about protecting the property.”
“First class service from CPH Interiors, very clean, tidy and considerate, thank you both.”
“Had CPH Interiors to sort my damp problems, very professional will recommend to anyone”
“Craig and Cody did a fantastic job. They identified the damp problem, explained the process and finished to a high standard with no mess. Highly recommend.”
“First class job on my bathroom damp problem. Craig was courteous, professional and clean. I cannot recommend him highly enough.”
“Found CPH on MyBuilder for damp proofing in Tredegar. Craig talked me through everything, kept me updated and genuinely cared about protecting the property.”
“First class service from CPH Interiors, very clean, tidy and considerate, thank you both.”
“Had CPH Interiors to sort my damp problems, very professional will recommend to anyone”
Think you may have a damp or condensation problem?
Surveys and advice are free.
1984
Year established
40+
Years on the tools
About CPH Interiors
Established 1984
Based in Tonyrefail, working across South Wales, West Wales, Bristol, Devon, Hereford and Gloucester. Specialists in damp, condensation, insulation and ventilation, alongside a wider range of property services.
Surveys and advice are free.
More about usPayments by cash, BACS or cheque · Key worker discount available
How it works
From first call to finished job
- 01
Get in touch
Call or send a few details.
- 02
Free survey
We visit and find the cause.
- 03
Clear recommendation
A plain explanation and a quote.
- 04
Work completed
Carried out by our own team.
Where we work
Based in Tonyrefail, working across South Wales and the West
47 Parklands Crescent, Tonyrefail, Porth, CF39 8PF
- Tonyrefail
- Porth
- Pontypridd
- Bridgend
- Cardiff
- South Wales
- West Wales
- Bristol
- Devon
- Hereford
- Gloucester
Think you may have a damp or condensation problem?
Surveys and advice are free.