How To Paint Exterior Window Trim

Before starting

With the exception of new windows, treat moss and mould using Resene Moss & Mould Killer (run across Data Sheet D80). This is best practical with a knapsack garden sprayer. Care should be taken to avert plants etc.

Wash and scrub using Resene Paint Prep and Housewash (meet Data Sheet D812) to dechalk and remove any contaminants including mould residue. Nosotros recommend wearing protective gloves and using a 3M scouring pad. Rinse with fresh water.

Exercise non waterblast equally this volition damage the timber and gamble great the glass.
Scrape and sand any flaked or unsound paint using 100-220 grit sandpaper. Depending on the degree of sanding required, a linbide scraper and/or 35-50mm flat bladed scraper may also be needed – if necessary supervene upon glazing putty.
Prime or spot prime with either Resene Quick Dry primer (see Data Canvas D45) or Resene Wood Primer (see Data Sheet D40).
1. Notation i: With the notable exception of Resene Truthful-Prime, the manufacturers of the primers used to pre-prime number new timber in New Zealand and Australia require that the timber is sanded and re-primed with a solventborne primer such equally Resene Wood Primer. Pre-primers are thin holding primers and designed to provide only temporary protection during the building process.
  
  They should not be considered part of the blanket system.
2. Note 2: Unfortunately near are and then poorly spring together that unless the primer is sanded off completely, a solventborne primer (equally opposed to a waterborne primer like Resene Quick Dry (see Data Canvas D45) will exist needed to help stabilise the pre-primer and ensure a expert base for future topcoats. Well-nigh paint failures on new outside timber are due to the poor quality of these pre-primers.
  
  As noted the exception is Resene Truthful-Prime which was developed specifically to overcome the issue identified higher up. Information technology is blue in color but unfortunately that has been copied, so the only truthful indicator is if the required identification sticker has been left on site.

Paint and painting accessories

Pouring paint

Stir the paint thoroughly using a apartment bladed stirrer and decant approximately one-half a litre of pigment into a paint pot. Except on the coldest days, add together up to 5% Resene Hot Atmospheric condition Additive.
The key to a elevation quality finish is to use a good quality brush in a size y'all're comfortable with. Nosotros recommend the PAL Fable 35 or 50mm cutting-in brush.
Please take the time to carefully read through the instructions on the label. More information, including Data Sheets for the Resene products mentioned and Prophylactic Data Canvas/southward (SDS) can be plant on the Resene website.

Awarding

Starting to paint

When painting windows it is important to plan your approach.

With all windows including the casement window shown, the rebates on the internal edges of the window and the frame are painted first.

Start with the peak edge and move downwards to the hinged side of the window jamb – painting both the within face of the frame and the window earlier completing the opposite side and bottom within face of the frame.

Step 2 - Paint the window sash

One time completed starting time on the edges of the window itself. Wipe any backlog paint from the interior attribute of the window using a clean rag or similar.

After completing the underside of the window close it to the last position on the latch and paint the window sash starting at the top rail before working around the window sash, painting the hinges and inside edge of the frame too.

Step 3 - Painting window hinges

As waterborne enamels dry faster than solventborne enamels it is important to paint in the aforementioned direction around the window using the timber joins every bit a natural overlap.

If the frame and the sill are beingness painted in a contrast color this edge and the residual of the frame should be completed after the window and the inside edges accept stale and it can exist closed completely.

The hinges are usually painted in the same color equally the window frame.

Step 4 - Painting the window frame

Next paint the height rail of the sash starting with the puttied edge – bringing the paint out over the putty and onto the glass by 1mm.

In one case done pigment the lower rails of the sash earlier starting on the hinged side and the leading border of the window.

Finally pigment the inside face of the window – this is done last as information technology is used as a handhold (support) by the painter.

Leave the window slightly ajar – commonly on the concluding position of the latch and paint around the frame earlier finishing with the sill.

Step 5 - Painting the mullion rail

After completing the second sash using the aforementioned techniques and sequence paint the mullion rail.

Next paint the scribers or outer edge of the frame.

Step 6 - Painting the scribers and frame

Information technology is best practise to paint the scribers on the weatherboard border of the window frame in the same colour as the window as shown hither.

Now complete the window frame working effectually the window once more using the timber joins as a natural overlap.

Once the frame is consummate paint the windowsill. Permit three to four hours to dry before applying a second glaze.

Step 7 - Applying the second coat and drying instructions

Let three to four hours to dry before applying a second coat.

Attempt non to paint besides late in the 24-hour interval to avoid dew settling and marker the paint. Leave the window slightly ajar for 24 hours before fully closing.

The availability of waterborne enamels has fundamentally changed painting and particularly then for exterior windows – if petty grooming is needed then painting windows is easy and straightforward. If available we too recommend the employ of a Resene CoolColour™ when using strong colours, for case on the windowsill.

Central accessories

A quality Legend brush. We recommend the 50mm Legend cutting in brush.
Resene Hot Weather Additive. This is useful not only in warm, dry conditions only to meliorate the open up time of waterborne enamels making brushing easier.
180 to 220 grit zinc sterate sandpaper. You will demand to sand before painting especially hardened glossy paint that has not been exposed to U.V. low-cal.
A pigment pot. These are incredibly useful and much easier to paint from than direct from the can.
If yous are painting a new window or if the window has exposed timber, you volition also need to prime number or spot prime number with Resene Quick Dry primer (a solventborne primer such equally Resene Wood Primer (see Information Sail D40) or Resene Enamel Undercoat (see Data Sheet D44) should be used to seal timbers such every bit cedar that stain through waterborne primers).
You lot may need a filler for any dents or holes. We recommend Resene Ezyfill or PAL Contract Series filler for this purpose.
Resene Paint Prep and Housewash and a 3M pad. The cleaner is very effective at removing one-time paint residue called chalk as well as dirt and other contaminants.

You may as well need

A decent drop sheet(s), especially if other painting projects are planned (on the horizon).
A putty knife or similar for applying any filler.
Scrapers and coarser sandpaper if an old pigment needs to exist partially stripped (contact Resene if the window needs to be completely stripped).
Painter's gloves – they are relatively cheap and save a lot of cleaning. They are also very useful for wiping any drips or along the sharp edge of the door.

How to paint an exterior window using Resene waterborne enamel

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