Garage Door Painters in Winchester

Timber garage doors — whether side-hinged or up-and-over — need the same preparation discipline as any other exterior timber surface. We strip back loose or flaking paint, sand to sound timber, fill any splits or surface cracks along the grain, and apply an oil-based or specialist exterior timber primer before the finish coats.

In Winchester’s chalk valley climate, the seasonal cycle of dry summers and wet winters opens micro-cracks in old paint build-up year on year. Two full coats of exterior gloss or satin finish are standard, producing a result that holds for five to eight years with good preparation.

The most common failure on metal garage doors is rust bleed-through — a sign that rust was present at the painting stage and not treated before finishing. We assess the door for corrosion before quoting. Surface rust is treated with a rust converter and sealed with a rust-inhibiting metal primer before any finish coat goes on.

Wire brushing removes loose scale and prepares the surface for primer adhesion. The primer is the most important coat on a metal door — it is what stops corrosion returning. We apply a durable exterior metal topcoat in the colour of your choice once the primer has cured.

GRP (glass reinforced plastic) is the most common material in modern composite garage doors. It is smooth, non-porous, and does not absorb primer or paint like timber does. A standard primer applied directly to GRP will not bond correctly and the finish will peel.

We use specialist adhesion primers formulated for composite surfaces — these create a mechanical key on the smooth substrate before the topcoat goes on. Colour choices are wide: any exterior finish colour can be applied once the correct primer system is in place.

uPVC garage doors can be painted successfully, but only with the right primer. Standard masonry or wood primers will not adhere to the smooth uPVC surface and will lift within months. We use specialist plastic primer systems designed for non-porous substrates, which create the adhesion layer the finish coat needs.

When done correctly, a painted uPVC garage door holds its finish for five to eight years before a refresh is needed. Colour options range from standard white or cream through to contemporary grey, anthracite, or black — popular choices on Winchester’s period properties.