How long does a garage roof replacement take?

Size is the obvious factor, but it is rarely the main one. A single garage has only a few metres of roof, so the covering itself goes down quickly. The time is taken up by what is beneath it and around it: stripping the old roof, finding out what state the deck or purlins are in, and setting up safe access. A roof with a sound deck can be stripped and recovered in one continuous run. One with a rotten deck needs timber replaced before anything goes on.

Access plays its part too. A garage at the bottom of a steep Stroud lane, or behind a terrace with no vehicle route, means materials are carried by hand and waste carried out the same way. Access is recorded on our first visit and costed in the quote, which keeps the day itself free of nasty news. The typical price ranges are on our garage roof cost guide.

Each covering has its own rhythm. Built-up felt goes on in layers with the laps joined, so the roof is watertight once the final layer is down and the details at the edges and upstands are finished. EPDM is a single large sheet stuck to the deck with adhesive, which has to be allowed to grab before the edges are formed. The membrane itself can be quick to lay, but the careful work is at the corners and upstands.

Sheet roofs, such as corrugated cement or metal, are fixed to timber or steel rails, so the pace depends on how many sheets are used, the state of the rails and whether the old sheeting comes off cleanly. If the old sheet is asbestos cement, the removal is the slow part, because it is done carefully, wrapped, and the waste kept apart. Our answer on a cracked asbestos sheet covers when damage adds steps.

A flat or low-pitched roof cannot be left open overnight in the rain, so a sensible programme waits for a settled spell and covers the work each evening. Adhesives and joined laps behave differently in cold or damp conditions, and a deck that is wet should not be sealed over. That is why the calendar can matter more than the clock. A job may be a short one on paper and still be moved by a few days to wait for a dry deck.

Winter has its own considerations, from short daylight to frost on the deck. We go through them in our answer on garage roof work in winter. Nothing about timing is promised in advance of the survey, because we would rather give you a realistic programme than a hopeful one.

Some items add time to an otherwise simple job. Replacing a rotten deck, building up falls so the roof drains properly, fitting new gutters or fascias, and forming a new upstand against the house wall each take their own part of the programme. A concrete roof slab brings its own questions about preparation, which our answer on a concrete garage roof covers.

Permissions are worth thinking about early. Swapping one covering for the same kind seldom needs planning permission, yet a listed house, or a conservation area with extra controls, is the time to ask Stroud District Council's planning team first, and a change that adds a rooflight or a pitched roof may bring in Building Regulations. Where consent comes into it we explain it, and we handle the paperwork when the work is notifiable.

A few small things on your side shorten a garage roof job. Clear the garage of cars, bikes and stored boxes before we arrive, or at least move them away from the walls, so nothing is in the way of falling debris and nobody has to carry things out while the roof is open. Mention overhanging branches, shared drives and neighbours' boundaries, because a ladder or scaffold needs somewhere to stand.

Check where an outside tap and a socket are, as some tools and mixes need water and power. Let us know about parking restrictions in your lane or street. Where the garage sits behind other properties, agreeing in advance how we pass through saves a morning. If you are replacing a roof you suspect is asbestos cement, get the sample result first, because a job halted midway for laboratory results runs slowest of all. Our answer on whether your garage roof is asbestos covers that step.

The written quote follows the survey and draws on photographs of your own roof. It covers scaffold or access, stripping, the deck, the new covering, the details, the waste and the making good, and it states the order of work and what could shift the dates. We keep you updated if a hidden fault changes the plan, and the price of any extra is agreed before we do it.

When we finish, the site is swept and the rubbish removed, and the new roof carries our 10-year workmanship guarantee in writing. For the whole service, see garage roof replacement in Stroud, or call 01453 933613 and send photographs through the enquiry form.