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Frequently Asked Questions

What happens if my timber is not protected
How does the weather affect my timber  
How should I protect my timber
How does CD50 protect my timber  
What sets CD50 apart from other products
Is CD50 safe to use around children and pets? And is it safe for the environment?
What timbers can I use CD50 on? 
How do I use CD50?
Where can I buy CD50?
Can I put CD50 on top of other products?
No - see next question for explanation.
Why is it so important that I remove all surface coatings (paints, stains) before using CD50?
I don't know if my house has been previously treated with a surface treatment or film former
My house has a surface coating (paint, stain, etc.) - how do I remove it? 
It is best to get a professional to do this for you - this can be a complex process, using specialised equipment and chemicals. The results can be dramatic, as warped and cupped timbers can be returned to their near original profile, and the original natural colour and beauty of the wood restored. For further advice contact Churton Pacific Ltd  we can recommend reliable experienced people who will give you a good result. Or contact The GoodWoodGuys
My timber weatherboards have cupped and twisted - what can CD50 do to resurrect them?
Is CD50 suitable for the harsh sunlight and very high UV levels we have in New Zealand? 
Will CD50 peel?
Can I use CD50 inside my house?  
Yes, CD50 can be used inside the home safely.
Where it will be exposed to splashes from spa pools, kitchens or toilets, it should be protected with WETSHIELD

In areas where it will exposed to dirt and grim, such as doors, window sills, contact areas etc., WETSHIELD can be used as a protective coating so the surface can be wiped clean as necessary.  
Can I use CD50 on my hardwood outdoor furniture? 
Yes, Clear CD50 will allow the timber to silver naturally without black & slippery mould and fungus. 

If using on new timber, use very sparingly - alternatively, allow the timber to weather for a few months, as CD50 penetrates better once the natural oils have leached out. If using a Colourtone - work with the natural colour of the timber. Decks and outdoor furniture are usually placed to receive maximum sun. Accordingly, if a Colourtone is used, the maintenance will be more frequent than that of a normal vertical house surface. 
Can I use CD50 on decks?
Can I use CD50 on plywood? 
Can I use CD50 on shingles? 
My Timber has had nothing on it - how do I prepare it for CD50
My timber has silvered with age/ is dirty/ mouldy - can I get it back to the original colour? 
My timber is heavily stained with water stains, tannin stains or grease
I want to retain the colour that my timber is now - I do not want it to silver
I want my timber to age and weather naturally 
I want my timber to age and silver naturally but want an even silver look all over
Do I have to measure the thickness of CD50 after applying it? 
No! CD50 soaks into the timber - it is not a surface film forming product however brush or wipe off any excess after application to stop dripping.
Do I have to put a coat of preservative on first, then several coats of colour?
No - CD50 contains the active ingredients in one mix. If you want a Colourtone, you add this to the mix. It all goes on together. Then you apply the second coat (the same mix) after at least four weeks.
I understand that if I use new timber, the retained moisture must be less than 17% - what is retained moisture and how will I know the level? 
Retained moisture is the natural sap left in the wood. This must be reduced to below 17% before applying CD50. Your timber merchant can test the timber and tell you how much moisture the timber contains.
Do I have to wait 4 weeks? - I don't want to rehire the scaffolding later 
You can apply the second coat before 4 weeks if it has penetrated in fairly well (e.g. if the weather is dry) - but we recommend letting the first coat soak in well before the second coat, as the longer the time between coats, the better the colour retention will be. In humid or cold conditions it is better to wait until after 4 weeks.
I want to build a log house - what should I use to treat it?
 

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