Roof & Gutter Warning: Heavy Rain Followed by Freezing Temperatures Could Cause Hidden Roof Damage

A common link between many of the current enquiries coming into J Janes Roofing is overwhelmed roofs and rainwater goods.

After weeks of persistent rainfall across Bournemouth, Poole and the surrounding BCP area, gutters, downpipes and roof drainage systems are struggling to cope. When rainwater goods become blocked or overloaded, water doesn’t drain away efficiently. Instead, it can back up beneath tiles, soak into flat roofs, or collect inside roof voids.

Now, although the rain is beginning to ease and clearer skies are appearing, this can actually introduce a new risk.

Clearer nights with fewer clouds allow temperatures to drop rapidly. If we hit freezing conditions, any trapped water inside roofs, felt layers, insulation, or roof voids will freeze. As water freezes, it expands. This expansion can:

• Widen small cracks in felt, leadwork and flashing

• Lift tiles and slates

• Split gutter joints and downpipes

• Damage fascias and soffits

• Create new internal leaks once thawing begins

What starts as minor water ingress during heavy rain can quickly develop into more serious structural roof damage after a freeze-thaw cycle.

Why This Is Happening Now

• Prolonged rainfall has saturated roofing materials

• Blocked or partially blocked gutters are preventing proper drainage

• Moss and debris are restricting water flow

• Sudden temperature drops increase freeze expansion risk

What Property Owners Should Do

• Check gutters and downpipes are flowing freely

• Look for signs of overflowing during rainfall

• Inspect loft spaces for damp patches or condensation

• Address minor leaks before freezing weather arrives

Preventative maintenance now can prevent costly roof repairs later.

If your gutters have been overflowing, your roof has been leaking, or you’re concerned about water trapped within your roofing system, acting quickly before temperatures drop could save significant expense.

For roof inspections, gutter clearance, rainwater goods repairs and emergency roofing services across Bournemouth, Poole and Christchurch, contact J Janes Roofing for professional advice and support.