Ensure product is thoroughly stirred before and during application, otherwise sheen and colour variations may be experienced. Cetol Filter 7 plus is supplied ready for use. Do not thin. Cetol HLS plus should be used as a basestain for joinery items prior to coating with Cetol Filter 7 plus. For best results use a good quality, long-haired soft bristle brush.The product should be applied in a full flowing coat, laying off in the direction of the grain, using the minimum number of brushstrokes necessary to produce an acceptable finish. Avoid overbrushing, as this will reduce the protection afforded. Apply to a minimum wet film thickness of 55 micrometres. Conditions - Do not apply if there is a risk of rain, or when air/substrate temperatures are below 5ºC or above 30ºC during application or drying periods. Protect from frost and rain until dry. Failure to meet these requirements may adversely affect the drying, visual quality and durability of the finish.Two coats of Cetol Filter 7 plus should be applied, allowing a minimum of 16 hours drying time between coats. On new work, where practical, the first coat should be applied all round prior to fixing. Pay special attention to any areas of exposed end grain,tops and bottoms of doors, and undersides of cills. The second coat should be applied to all exposed surfaces, as soon as possible after the first coat has dried, but no sooner than 16 hours.