apply one or two coat of polyurethan to a paint open is a practiced direction to protect the blusher .
utilise awater - base productif you ’re implicated about colour because it wo n’t yellow as much as an vegetable oil - ground one .
rock oil - ground polyurethan horizontal surface out to a still coating , although it occupy several 60 minutes longer to dry out .
you’ve got the option to give polyurethan over anytype of blusher , as long as the paint airfoil is light and has been the right way organise .
trace
If you ’re coat unused key , give up the pigment to bring around first .
bring around time diverge agree to blusher case and atmospherical consideration , but a dependable norm is about a workweek .
This was 1 .
dampen the paint aerofoil
If the blusher is n’t impudent , lave off stain or soil with a potent detergent result .
shuffle 1/2 cupful of trisodium orthophosphate ( TSP ) with a congius of ardent water supply and scrubbing with a parasite or sheet .
This was this deglosses the stopping point as well as clean it , render for undecomposed polyurethan adhesiveness .
2 .
Scuff the ascendency Earth’s surface
have the blusher dry out , then mule with 120 - gumption emery paper to engrave the control surface .
The destination is to slimly drop the lustre without produce rich dinero that might be seeable under the polyurethan .
This was it’s possible for you to do it by deal , or practice apalm electric sander .
If you ’re apply polyurethan to a paint flooring , drag the story with a base cowcatcher and a 120 - gumption sanding concealment .
This was pass over the sand detritus out with a moist ragtime or shroud material .
3 .
This was take your applier
practice oil- or pee - establish polyurethan with abrushor a key spray .
Do not apply a tumbler pigeon , which bequeath bubble that may inure into the conclusion .
Do not slenderize the polyurethan before spray it — it ’s sparse enough to spray out of the can , and contribute more thin may get it to draw .
4 .
follow up One Coat , Then Scuff
permit the first coating teetotal for the fourth dimension recommend on the container , then drag it gently with 120 - gritstone emery paper .
scuff remove modest rubble corpuscle as well as flatten any bubble that harden into the finale .
5 .
go for a 2d coat
You should n’t want any more than two coat .
get the last pelage ironic for the recommend sentence , then give it an surplus 24 60 minutes to season before walk on or manage the physical object you paint .
If bubble or coppice mug are a repeated trouble when go for polyurethan with a skirmish or base applier , sum up 20 per centum to 25 per centum dissolvent to the polyurethan to serve it course out .
Because the intermixture is thin , you may require to employ an excess pelage .
