Maintaining your
custom-made joinery

It’s important to maintain your custom-made joinery to keep enjoying its beauty and functionality for many years. Here’s some further advice about joinery maintenance.

Why you need to maintain your joinery

High performance, engineered products such as boilers, washing machines, cars or joinery (of any material) will require some form of maintenance to ensure long life, efficient performance and visual appeal. Failure to keep to a planned maintenance schedule may at best ruin the appearance of your joinery. At worst, it could lead to the early deterioration of the components.

General guidance

The most important elements to maintain are the coating system and the hardware. However, it’s advisable to check the entire unit (interior and exterior), including the glazing unit and weatherseals, for any signs of deterioration. The type and level of maintenance required will depend on the location of your property and exposure to weather. Exterior joinery in a south facing position in a coastal area will deteriorate far quicker than if it is north facing and sheltered from wind and rain.

Joinery maintenance
following installation

To maintain the longevity of our products, it’s essential to follow these guidelines:

  • Products supplied in the white (bare timber) should be primed or stained immediately. If products are supplied/installed with a base coat stain or a paint primer, these are not an adequate seal and it’s recommended that the final finishes are applied well within the recommended three months, depending on weather conditions and the season.
  • Before applying further decorative paint or stain coatings to external joinery, all surfaces should be clean and dry, and they should be lightly sanded between coats. It’s the responsibility of the person applying further paint or stain finishes to check for compatibility.
  • If your joinery is fitted with draught strip, please ensure that you remove this prior to painting the joinery. Your installer will show you how to remove and refit it in preparation for further coats of paint to be applied.
  • It’s essential that the final coat of paint is fully dried prior to refitting the draught strip – this ensures that it stays in place and its future efficiency is not compromised.
  • If we have brush applied primer or undercoat to your joinery, these have been selected from the Dulux Trade range of products which are all water-based products. We have applied one coat according to the manufacturer’s instructions and we can provide you with product sheets for further information if required. If your joinery has been fully spray finished to top coat, we will have used Omnia water-borne, microporous preservative, primer, undercoat and topcoat. Exterior softwood joinery is generally coated with Cuprinol Trade 5 Star Wood Treatment as a preventative measure against dry rot, wet rot and woodworm prior to the application of wood primer.
  • Where external oak joinery is treated to preserve its blonde appearance, we recommend the use of Danish oil or Osmo UV protection oil and, where required, will have coated your joinery with two coats of oil for an attractive, durable, satin finish. It is recommended that external oak joinery receives at least one more coat of Danish oil once installed, and it should then have a regular inspection and maintenance routine, as oak is prone to weather staining caused by moisture activating mould spores that are naturally present in wood. Horizontal surfaces and very exposed locations may require the most frequent attention – up to six coats may be appropriate, with regular maintenance coats.

We will use the most appropriate products for your joinery and provide you with data sheets and health and safety information where required.

Failure to follow these steps may invalidate the guarantee on your products.

General maintenance

We recommended that surface coatings, glazing and ironmongery supplied with our products are inspected at least annually, dependant on weather conditions. The decorative finish applied to our products must be maintained, and you should make sure moisture does not penetrate it.

General cleaning should be carried out regularly (minimum twice a year), using a non-abrasive cloth with mild detergent and warm water that should be frequently changed. After cleaning, rinse thoroughly with clean water to remove all residue but do not use hosepipes or pressure cleaning equipment. During cleaning, if any damage is noticed, this must be repaired immediately. Areas of general wear and tear, such as window and door sills and door edges, should be made good and touched up as necessary.

troubleshooting advice

Mould and algae

All joinery can suffer from mould and algae caused by airborne spores which settle on the surface. To remove, apply a solution of one part bleach to two parts water, leave for 20 minutes to work, then rinse. If the blemish is stubborn, scrub with a stiff nylon bristle (non-metallic) brush.

Exuding natural resin

Wait until resin has dried to a white crystalline substance before you attempt to remove it. Use a hot air paint stripper to soften the natural resin and draw as much as possible from the underlying timber without overheating, as this may damage the coating system. Remove with a lint-free cloth, dampened with methylated spirits to clean away any remaining resin from the timber surface. Apply a suitable base stain or primer to bare timber areas, then bring forward these areas with one coat of finish before applying a further coat of finish overall.

Maintaining hardware

  • Wipe away all dirt and debris, and check screws are tight.
  • Handles – wipe clean with a damp cloth. Do not lubricate.
  • Window locking system – apply petroleum jelly to all locking bolts, guide slots and striker plates.
  • Hinges – add a light machine oil to all pivots and wipe away excess, using the smallest amount possible.
  • Ventilator and canopy – wipe clean with a damp cloth and clean away blockages.

If you need any assistance, we’ll always be happy to help you look after your joinery. Please don’t hesitate to ask.

Contact us

Contact us – we can answer all your questions and will be happy to book a free, no obligation consultation.
Call 01273 814870 or email