Garage Damp Fixed from Outside on Sandelswood End, Beaconsfield HP9
A house on Sandelswood End in Beaconsfield had damp in the garage. A water softener nearby was a possible suspect, but the survey pointed to the outside of the wall.
Project at a Glance
The Brief
The owners wanted to know whether the garage damp came from the water softener or from outside.
The Survey
The surveyor considered salts from the nearby water softener installation, but the evidence suggested this was not the main cause. The moisture was most likely coming in sideways through deteriorated pointing on the outside of the wall, a form of penetrating damp.
The Solution
A proportionate external fix:
- Repoint the deteriorated masonry.
- Apply StormDry, a breathable water repellent treatment, to the brickwork.
- Allow the wall to dry naturally over time.
The Work
The repointing and StormDry application were completed in one day in July 2026.
The Result
No internal work was needed. With the joints sound and the brick protected, the wall can dry out. See our page on damp proofing in Beaconsfield.
Frequently Asked Questions
Can a water softener cause damp?
Salts or leaks from appliances can raise readings nearby, so they are checked, but here the cause was outside.
What is StormDry?
A breathable water repellent cream for masonry that reduces rain penetration while letting the wall dry.
Will the wall dry on its own?
Once water stops getting in, most walls dry naturally over time.
Damp in a garage or outbuilding?
Our CSSW and CSRT trained surveyors find the real cause before recommending any work. Non-invasive survey with a clear written report. No obligation.
Survey carried out by Lionel Sewell (FODCS) at Advanced Damp. Project completed in Beaconsfield, HP9.
Sam Fitzgerald is the founder of Advanced Damp and a working damp and structural waterproofing surveyor diagnosing and treating moisture problems in residential and commercial properties across London and the South East. He is FODCS certified (a Federation of Damp Certified Surveyor) and a member of the Federation of Damp. His hands-on work covers rising damp, penetrating damp, condensation, basement waterproofing to BS 8102, and thermal imaging surveys, and he has personally completed over 400 damp surveys across properties of every type and age. Everything he writes draws directly from jobs he has carried out. He does not write about treatments, products or causes he has not dealt with first-hand in the field.
