How to Paint a Roll-Up Garage Door
Begin by thoroughly preparing the surface of the roll-up garage door you're going to paint. This will be mostly dependent on the shutters current condition and what material they are made from.
If an old powder-coated shutter is being painted, more preparation will be needed. If this isn’t done, the surface will easily chalk and peel away.
Before painting, cover everything over with plastic sheets so they don’t become splattered with primer or paint. It will also be necessary to ‘mask off’ any areas you don’t want to paint by using paper, plastic and decorators tape.
Using a mild detergent, give the surface a thorough clean. This is critical because dirt or grease will affect how the paint sticks to it. Once you’ve done this, you’ll then need to sand down the surface to ensure the new coat of paint sticks to it properly. Etching primer can also be used.
If a roller shutter isn’t prepared correctly, the paint will chip or flake easily once the paint has been applied. This is why it’s so important to use the right products.
To guarantee the best results, give your shutter a couple of light sprays to prevent it from dripping. The paint should be dry within a couple of hours, so it will probably be suitable to use the next day. It is advisable to spray the shutter overnight or at the weekend.
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How to paint a steel or metal garage door
If your door has already been coated in a primer, you can apply a metal or garage door paint over the top. If you’re thinking of painting a brand new galvanised door, the bad news is that you won’t be able to. This is because metal paint won’t adhere to it and will flake off in a matter of days. Therefore, you should only paint your garage door if it has already been primed or painted. This is what we will explain here.
Start by giving your door a good clean using soapy water and a clean cloth. Then rub off any remaining residue. If the door is greasy, be sure to remove this using sugar soap. Leave your door to dry before moving to the next step.
If the paint is flaking, rub it down well and prime any parts where bare metal is exposed. If the door hasn’t already been primed, apply a coat of metal primer. Take care to follow the instructions on the tin. Leave to dry thoroughly for eight hours.
You are now ready to apply the first coat. Make sure the paint you’ve selected is suitable for garage doors and thoroughly stir before use. Using a brush or roller, apply the paint using a natural fibre brush. Repeat the process for each layer of paint needed, allowing it to dry entirely during each one.
Complete the process by painting on several thin coats rather than one thick one. As well as producing a better finish, it will also be more hardwearing.
How to paint a wooden garage door
Use a scraper to get rid of flaking paint or rotten bits of wood. If there are any gaps around the wood, fill them using an external caulk and repeat this for the decayed areas. Once the filler has dried, sand it with medium-grit sandpaper. If the majority of your door is peeling, it may be necessary to sand the whole thing down.
Next, degrease the door and apply a mildewcide. Rinse this off and allow to dry out thoroughly. Cover the ground with dust sheets and mask any areas you don’t want to get paint on using tape and plastic sheets.
Now apply your coat of primer, leaving it to dry out thoroughly. Once dry, apply the topcoat, repeating the process for each layer required and allowing the paint to dry correctly.
Best paint for a metal garage door
ColourPro polyurethane paint
This is a tough and durable paint which comes in all RAL, BS, Pantone and many other colour schemes and available in brush, spray, and aerosol versions.
The 2K Pro spray paint is the better option for a long-lasting finish and great durability. Application usually requires a self-priming coat and then 2 further full coats. 1 litre will cover a single garage door.
Garage door respray
Start by making sure your work area is clean and safe. Give your garage door a good clean down, making sure it is free of grease.
Once thoroughly cleaned, leave the door to dry before moving to the next step. Take some 180 grit sandpaper and sand down the entire door lightly. This will ensure the paint sticks to the surface sufficiently.
Dust the door down then apply the first coat of paint. It’s better to apply several light coats of paint rather than one or two heavy ones. This will give a much better finish.
Make sure you give the paint enough time to dry sufficiently between each coat.