How to Prepare Your Roof for Winter

1. Clear Gutters and Downpipes

• Remove leaves, moss, and other debris so water can flow freely.

• Check that gutters are securely fixed and not sagging; heavy snow or ice can pull them loose.

• Make sure downpipes are unblocked and that water drains away from the house, not toward it.

• Consider fitting gutter guards to reduce future buildup, especially if you live near trees.

2. Inspect Roof Tiles and Flashing

• Look for cracked, slipped, or missing tiles or slates. Strong winds in the North can easily lift loose ones.

• Check the flashing around chimneys, vents, and skylights, and reseal any gaps with appropriate roofing sealant.

• Inspect ridge tiles carefully, as they are vulnerable to frost and wind damage.

• After storms, do a quick visual check from the ground for any shifted tiles or debris.

3. Protect Against Ice Dams and Freeze-Thaw Damage

• Make sure your loft is properly insulated. Around 270 mm of mineral wool is generally recommended under UK building regulations.

• Seal any gaps where warm air might leak into the loft, such as around pipes, loft hatches, and downlights.

• Keep soffit and ridge vents clear to maintain airflow and prevent condensation.

• In older houses, ventilation is especially important—avoid blocking vents in an attempt to trap heat, as this can trap moisture instead.

4. Check the Loft Interior

• Look for dark patches, damp, or mould, which can indicate leaks.

• Ensure insulation is dry, as damp insulation loses effectiveness.

• Check that roof timbers are solid and not showing signs of rot.

• Inspect after heavy rain with a torch; small drips can be easier to spot this way.

5. Trim Nearby Trees

• Winter storms can cause branches to snap and fall onto your roof.

• Trim back any branches that overhang or are close to the roofline. Aim to maintain a clearance of at least two to three metres if possible.

6. Check Roof Accessories and Chimneys

• Ensure chimney pots, cowls, and flashing are secure; frost and wind can loosen mortar over time.

• If you use your chimney, have it swept before winter to prevent blockages and reduce fire risk.

• Check that solar panels, aerials, or satellite dishes are firmly attached.

7. Treat Moss and Algae

• The damp northern climate encourages moss growth, which can trap moisture and damage roof coverings.

• Gently remove thick moss or use a suitable biocide treatment.

• Avoid pressure washing, as this can damage tiles and dislodge protective coatings.

8. Arrange a Professional Roof Inspection

If your roof is over ten years old or you’re unsure of its condition, arrange an inspection with a qualified roofer in autumn. They can:

• Identify loose or damaged slates and tiles.

• Check ridge and verge mortar.

• Advise on whether repointing or partial retiling is needed.

9. Additional Winter-Ready Improvements

• In upland or high-snowfall areas, consider snow guards or roof heating cables.

• Top up loft insulation to reduce heating bills.

• Improve roof ventilation to prevent condensation, particularly in older slate or stone-built properties.