Moss growth on Heavitree’s roofs reflects the suburb’s tree canopy, valley humidity and Victorian and Edwardian roof surface types. We carry out low-pressure biocide treatment — never pressure washing — with a written post-treatment condition survey on every Heavitree property. Free quote. Call 01392 759 295.
Welsh slate is generally less hospitable to moss than concrete tile due to its smoother surface texture, but Heavitree’s north-facing rear slopes and the shade created by mature street trees on Church Road and Burnthouse Lane create conditions where moss establishes readily even on slate surfaces. The biocide application rate and dwell time for Welsh slate differs from concrete tile — we adjust the treatment method for the surface type on every Heavitree survey.
Post-treatment condition surveys on Heavitree Victorian slate properties frequently identify secondary issues that the moss growth has been concealing: cracked ridge tiles, failed lead sealant at chimney flashings, and blocked valleys from leaf accumulation. The survey is the most valuable element of every Heavitree moss treatment visit — it converts a reactive maintenance call into a proactive property condition assessment.
Most Heavitree properties benefit from treatment every 2–4 years, with annual inspection in the intervening period. The post-treatment condition survey at each visit builds a maintenance history for the property that informs future decisions. We offer scheduled annual inspection programmes for Heavitree homeowners who want consistent roof condition monitoring. Call 01392 759 295 for details.
Free survey and quote — no call-out fee, no obligation.
📞 Call 01392 759 295“Low-pressure biocide on our Heavitree slate roof. Condition survey identified a secondary issue. Good thorough service.”
“Treatment on our Victorian terrace in Heavitree. Heritage-appropriate method. Annual programme now set up.”
“North slope had been treated before with pressure washing. They explained why it kept coming back. Biocide approach has lasted much longer.”
From £200 for a smaller property to £500+ for a larger detached. Includes condition survey. Call 01392 759 295.
Every 2–4 years for most Heavitree properties. Heavily shaded slopes may need treatment every 2 years.
No — pressure washing damages tile surfaces and accelerates re-establishment. Low-pressure biocide treatment is the correct method.
Tree canopy shade, Devon’s above-average rainfall and the textured surface of concrete tile or slate provide ideal moss conditions. Treatment every 2–4 years is the correct management approach.
Yes, progressively. Moss holds moisture against tile surfaces, accelerates nail corrosion and can lift tiles. Treatment is cheaper than the repairs it prevents.
A residual biocide with minimum 6-month kill activity, applied at low pressure. pH-neutral formulation on heritage surfaces. Never alkaline products on original tile glaze.
Yes — every treatment visit includes a written condition survey identifying any secondary issues found during access.
No call-out fee. No obligation. Local Exeter roofers who turn up when they say they will.
01392 759 295