Put the hidden protection in place before the finish
Decay dealt with early
We address dry rot and its moisture source before closing the structure.
Room use shapes the plan
Layout and ventilation are considered alongside waterproofing and access.
Programme set from scope
Initial construction and waterproofing averages between 8 and 12 weeks.
Check structure, moisture and fungal damage first
A basement conversion begins with the parts that will later disappear behind the finished room. We inspect projects in Dewsbury for structural condition, water routes, access and signs of dry rot. If fungal decay is present, we trace the moisture source, investigate its spread and remove timber that has lost strength before the fit-out proceeds. We also need to understand your intended room and any headroom or layout concerns. Measurements, photographs and access details help us prepare for the site visit, but the final tanking and conversion plan follows what we find in the building.


Join waterproofing to the planned room
We can integrate cementitious tanking or cavity drainage with structural preparation, ventilation and internal conversion work. A barrier aims to resist water, while a drained membrane controls it behind the lining and sends it towards a managed outlet. Joints, floors, walls and service penetrations must form one continuous design based on BS 8102 principles. For a Dewsbury conversion, we also consider how the intended room affects airflow and finishes. The initial construction and waterproofing phase averages 8-12 weeks, with the final programme shaped by condition, size and scope.
Frequently asked questions
What should we provide for a conversion enquiry?
Send available measurements, photographs, access details and the room you want to create. Tell us about visible water, fungal growth or weak timber so we can prepare for the Dewsbury site consultation.
Can dry rot be treated during basement work?
Yes. We first identify and stop the moisture source, then expose the spread, remove unsound timber and apply specified fungicidal treatment. The conversion continues only with those affected areas properly addressed.
How do tanking and cavity drainage differ?
Tanking forms a barrier intended to resist water. Cavity drainage allows controlled ingress behind a membrane and directs it to drainage. Structure, pressure, maintenance and room use guide the choice.

