Can I Remove an Asbestos Garage Roof Myself?

What the HSE guidance actually says

Many cost websites say that an asbestos cement roof must be taken down by a licensed contractor. That is not what HSE says. Careful removal of asbestos cement sheets, handled whole and not broken up, is classed as non-licensed work. A risk assessment, controls and trained workers are always needed, even so. The material becomes notifiable non-licensed work if it will be substantially broken up, for example by dropping the roof or smashing it into pieces. You can read the detail on the HSE page on non-licensed work.

Notice what that means in practice. The law does not stop you from touching your own garage roof, but it expects you to know what you are doing. Where the sheets can be lifted whole, the work follows the non-licensed route. Where they cannot, a roofer should say so and explain the alternatives clearly, and that is what we do on every garage we survey.

Why doing it yourself goes wrong

The danger is in the fibres, so the whole method is about not making dust. Whole sheets, lifted by their fixings with minimum damage, lowered and wrapped, release little. The usual DIY approach does the opposite. Bolts are rusted and heads snap, so the sheet is levered or hit. Sheets that have weathered for decades are brittle, and one crack leads to the next. People step on them to reach the ridge and go through.

• Cutting or breaking sheets to fit them in a car or skip.
• Power washing the surface before removal.
• Working without a respirator, a disposable suit and a way of cleaning down.
• Leaving offcuts and dust on the ground, the lawn or the garage floor.

Fibres from a mess like that end up on clothes, in the house and in the garden. If you are unsure whether the roof is asbestos at all, start with testing a garage roof for asbestos. Sheets that are not asbestos are an ordinary building job, which changes everything.

What a careful removal looks like

It helps to know what the controlled version involves, because that is the standard to measure a DIY plan against. The work is planned in advance, with a written method and a risk assessment. Access is set up so nobody stands on the sheets: a roof ladder or crawling boards spread the weight, or a platform is used from below. The sheets are dampened lightly, not blasted with a hose, to keep fibres down. Fixings are undone, not smashed, and each sheet is lifted whole, lowered and wrapped on the spot.

The people doing it wear a properly fitted respirator and disposable overalls, and they clean down and bag the kit before leaving the area. The ground underneath is checked and cleaned with a method that does not throw dust into the air. That is a lot of kit, training and time for a job that looks like an afternoon with a spanner, and it explains why householders who try it often discover a wall of unexpected cost on disposal day.

Disposal is the part people miss

Asbestos waste cannot be put in the household bin, an ordinary skip or a hired builder's bag. It has to be double wrapped or bagged in sealed, labelled sacks and taken to a site that accepts it, or collected by a registered waste carrier. Councils and sites have their own rules and booking systems. We cover local routes on the page about asbestos disposal in Hampshire, and your own council's waste team can confirm what it will take.

When it makes sense to hire someone

Hire help if the roof is large, if sheets are cracked or mossy, if there is a ceiling, insulation board or soffit under it that might also contain asbestos, or if you simply cannot guarantee the sheets will come off whole. Overlaying with a new covering is sometimes an alternative to removal, and our guide to asbestos garage roof removal goes through the options and typical UK costs.

The garage roof replacement service begins with a free survey and photographs of your own roof, a plain account of what can stay and what must go, and a fixed written quote that includes taking the waste away lawfully.