Spray-treated doors and windowsSpray-impregnation is a treatment to protect windows and doors against the fungi and rotting processes. This treatment will take care that all parts are protected, that cannot be reached after installation. You can choose between a colourless spray-impregnation or one of our four transparent colours. For an optimal protection we advise you to stain the windows and doors within 1 year. Attention: If you choose the paint treatment for your windows and doors it is not necessary to choose for spray-impregnation. During staining a pre-treatment of spray-impregnation is included. Because we check every order, this will be checked accurately in advance.