The short answer
Sometimes. A roofer can often carry on with tiling or slating in a light shower, but not in heavy rain, strong wind or ice, because wet roofs are slippery and an open roof lets water in. Membranes, torch-on felt, mortar and resin need a dry, mild surface to bond and set, so those jobs wait. Weather is a main reason a start date moves.
The honest answer depends on the job. Some roof work carries on through a shower, and some stops the moment the surface is damp or the frost arrives.
Pitched roofs in showers and cold spells
A tiled or slated roof is laid in overlapping rows, so a new covering sheds water as it goes down. That is why a careful roofer can keep working through a light shower. The limit is safety first, then the open roof. Wet slate and clay are slippery, a ladder footing turns greasy, and wind makes carrying sheet material on a slope a hazard to the crew and the neighbours.
Can roofers work in the rain?
When stripping, the crew lifts only the area that can be sealed again before they finish for the evening. Under the old tiles lies the underlay, a sheet that catches stray water, resting on battens, the timber strips the covering is nailed to. Once those are exposed they have to be protected, because a downpour into an open loft is the worst outcome of a re-roof.
Cold on its own is less of a barrier for tiles and slates than for anything that is stuck or bedded. Short winter daylight limits how much a crew can strip and cover, so a job that takes a week in June can stretch in December, and a written plan for each day keeps you informed of how far it has got.
Jobs that need a dry surface
Flat roofs and bedded details are the other side of the coin. A flat roof is covered with a continuous waterproof layer, and that layer has to bond to a clean, dry deck. Three common types show how this works.
Which flat roof coverings cannot go on wet?
EPDM is a synthetic rubber membrane, normally glued down, and glue does not grip a damp deck. Torch-on felt is bitumen felt heated with a gas torch so it fuses to the layer below, which needs a dry deck and a dry lap, and the work also depends on calm conditions. GRP, glass-reinforced plastic, is fibreglass laid in resin that has to cure, and cold or damp air can spoil the cure. Moisture trapped beneath any of these can show up later as blisters or a failed joint.
What about mortar and lead?
Flaunching is the mortar slope that holds a chimney pot in place, and mortar bedding needs to set before rain or frost reaches it. Leadwork can be shaped in a cool dry spell, since lead is a metal sheet and not a glued layer. Flashing is the strip of it that seals a roof edge against a wall, and wind or slick footing can still stop that work.
Temporary covers and make-safe work
When the weather does close in, the roof still has to be left safe. That might mean a temporary cover, usually a tarpaulin or sheeting fixed so the wind cannot lift it, over an area stripped or repaired. A leaking roof gets made safe first from our side, and the full repair waits for better conditions.
Can roof replacement be done in the rain?
A full replacement can be planned through a wet spell, but the day-by-day sequence changes. Stripping slows or pauses, the underlay and battens go on as soon as a section is clear, and areas wait under cover until the surface can take the new layers. Rain does not make a re-roof impossible; it makes the order of work matter more.
A tarpaulin is a stopgap, not a repair, and it needs checking after strong wind. With water showing through a ceiling, read our emergency and general roof repairs page for how a make-safe visit goes and where a repair stops being enough. Send a photo of the ceiling stain and the outside of the roof if you can do so safely from the ground, and we will tell you what to expect before we visit.
Why a start date can move
Dates move for ordinary reasons. A forecast that turns wet, a night of frost on a flat roof, or a wind that makes lifting sheets unsafe can each push a day or more. Scaffold plays a part too. Somerset Council has its scaffolding permit issued to the appointed contractor, asks for at least 10 working days' notice and charges £124.60 per 28-day period, so a long delay can mean paying for an extension (April 2026).
What should you ask before a start date is fixed?
Ask what the plan is for a wet week: which part of the roof comes off first, what protects the loft overnight, and who tells you when a day is lost. A written price is for the job, and a good start date is a target the weather is allowed to adjust. We would rather tell you on the evening before that a morning is lost than leave a roof half open for the sake of keeping to a day on a calendar.
The roofing quote checklist lists the questions to put to any roofer. To book a survey and get a first idea of timing for your roof, start from our homepage, where photos of the roof can be sent in.
More on weather and roofing
Does frost put a roof job on hold?
Yes, on suitable days. Slating and tiling continue between cold snaps provided the surface is safe underfoot and whatever is opened can be closed up again. Glued membranes, felt, resin and fresh mortar are the winter casualties, so those parts of a job are often timed for a milder, drier spell.
Do you stop work if it starts raining mid-job?
We decide on the roof. A light shower may not stop a section being finished and covered, while heavy rain or gusts do. The rule is that nothing is left open: the area in progress is made watertight before the crew come down, and you are told what changes for the next day.
The full picture: Roofers in Taunton · More short answers