Can you put new varnish over old varnish?
Short answer: yes, you can apply wipe-on over previous varnish.
Painting Over Varnish Without Sanding.
It is often recommend that you sand any surface thoroughly prior to painting it.
Painting over varnish without sanding is not a best practice but it can be done..
Can I varnish over varnish without sanding?
Can you paint over varnished wood without sanding? Yes. … There are a few ways to do this, but we choose to use an oil based primer to prepare our varnished wood for new paint. The oil based primer will stick to varnished or sealed wood.
Can you varnish over varnished floor?
Varnishing a wooden floor. It is possible to re-varnish a previously varnished floor which is in good condition (see here), however if the previous varnish has started to wear in some areas, is cracking or flaking the only real option is to remove the original varnish and start again.
How long does floor varnish last?
15 to 20 yearsMost modern varnishes from the last 15 to 20 years are likely to be water-based. If the floor was varnished more than 20 years ago you can probably assume it’s an oil-based varnish.
Can you put dark varnish over light varnish?
Make sure you use the same finish ie “satin” – and accept you can only ever go darker. Whatever you do, you will need to do some sanding, just maybe not repeating the whole job. And bear in mind that if you do have to sand right back, you’ve already flattened it out so a re-sand wouldn’t be the end of the world.
Can you touch up varnish?
The key to effective touching up varnish is to do it soon after the damage is done. Or to keep the boat dry and out of the sun in the mean time. … But it can be worth keeping a small pot of varnish on board and doing those few scratches before the sun fades the wood etc.