
Specialist service
Ventilation in South Wales
Improve airflow and help control excess moisture.
What the work involves
Damp air removed where it is created.
Cooking, washing and drying clothes all put moisture into the air. With nowhere to go, it settles on the coldest surface in the property.
We improve ventilation so damp air is removed at source rather than pushed around the house.

- Airflow assessed room by room
- Moisture removed at source
- Kitchens, bathrooms and bedrooms
- Paired with insulation work
What causes it
The causes we identify on ventilation jobs
Lack of ventilation
The website states condensation is a common issue often caused by poor insulation or a lack of ventilation.
Moisture with nowhere to go
Where airflow is poor, moisture in the air settles on surfaces inside the property.
Our process
How the work is carried out, step by step
01Free surveyA detailed, free survey to identify the exact cause of the moisture problem.
02Improve airflowWhere ventilation is the cause, we recommend and carry out work to improve airflow.
03Expert adviceTailored advice on improving insulation and ventilation to prevent future condensation problems.
Need advice on ventilation?
Surveys and advice are free.
The detail
What we can confirm about CPH Interiors
- Established in 1984 — over 40 years of experience in damp proofing and home improvements
- Free, no-obligation surveys and advice
- Silicone horizontal barrier injection to form a DPC
- Epoxy resin tanking system, fully sealed before any plaster is added
- NVQ Levels in most skills and CSCS registered
- DBS-checked annually
- 100% positive feedback on My Builder, also listed on Rated People
- Discounts for verified NHS, Ambulance, Fire Brigade and Police staff (excluding management)
- Serving Tonyrefail, Bridgend, Cardiff and South Wales
- Payments accepted by cash, BACS and cheque
Our other specialisms
All specialist services