Precautions - Cutek CD50®
Weather and Temperature
Timbers to be coated with Cutek® CD50 should be clean and dry, with an equilibrium moisture content of no higher than 17%, and moisture gradient of less than 1%. Do not apply Cutek® CD50 to exterior timbers if it is likely to rain within 24 hours of application.
Cold temperatures may increase the viscosity of Cutek® CD50, tending to slow down the rate of diffusion. Storing containers in a warm place immediately prior to application will help alleviate this problem. Because Cutek® CD50 dries by diffusing into the timber substrate, application of a second coat of Cutek® CD50 too quickly after the first coat in cold weather will significantly delay the penetration and drying of the finished coating. If this inadvertently occurs, removal of excess Cutek® CD50 from the surface with a rag, will promote faster drying. Alternatively, the application of the second coat of Cutek® CD50 may be delayed for up to three months in cold weather, with no detrimental effect to the efficacy of the coating.
Surface Mould & Fungus
Clean looking timbers may be contaminated with mould spores, which are not readily identifiable with the naked eye. If timber in this condition is coated with Cutek® CD50 it is possible that dark staining may occur. If such staining inadvertently appears, contact Chemisys for CUTEK Proclean™ WAO Stain Remover.
Garage Doors
If the timber being coated is on a garage door and the glue holding the timber to the frame is either a rubber based adhesive, or you are uncertain; run a bead of glazing sealer along the back of the door where the timber meets the frame. This will ensure that the timbers will remain intact if the Cutek® CD50 weakens the adhesive.
Rubber & Butynol
Cutek will dissolve rubber based glues and adhesives, and will affect Butynol and rubber surfaces if not wiped off soon after contact is made. When Cutek CD50 is applied to wooden shingles, it does not normally affect the Butynol underlay. Timber protected with Cutek® CD50 can become stained if it is in constant contact with bituminous type materials.
Chemicals
Timber surfaces coated with Cutek® CD50 may show splash or spilling marks if contacted by chemically staining products such as wine, cleaner contaminated water, or strong chemicals. At risk areas include kitchens, bathrooms and spa-pool surrounds. Please contact Chemisys if you have any questions regarding the suitability of our products in these areas.
Cross Diffusion
Where plasterboard, plaster, or any other absorbent material abuts timber coated with Cutek CD50 it is possible that cross diffusion into the porous substrate will occur. Please contact Chemisys if you have any questions regarding the suitability of our products for your application.
Leaching
Exterior painted or plastered surfaces situated below Cutek® CD50 protected timbers may become stained by leachate from above. If this inadvertently occurs contact Chemisys for CUTEK Proclean™ WAO Stain Remover.
Fastenings
Cutek® CD50 will not adversely affect hot dipped galvanised iron, silicon bronze, stainless steel or copper nails. Colour-toned Cutek® CD50 may lightly stain lead flashing and other substrates contacted by leachate.
Knots
When Cutek® CD50 is applied it diffuses deeply into the timber and displaces moisture. This reduction in moisture content may loosen some knots, particularly in very knotty timbers.
Preservation
Cutek® CD50 is designed purely as a surface coating type product, and is in no way intended to replace licensed timber treatment processes.
Plywood
Application of Cutek® CD50 to some decorative plywoods with extremely thin top veneers may cause underlying dark veneer glue lines to become visible due to the penetration of Cutek CD50 rendering the top veneer semi transparent. Please contact Chemisys for a free sample of Cutek® CD50 to test on your plywood substrate to determine suitability if you suspect this may be a problem.