Rasping the EPS Foam

EIFS Repair Tip Of The Day for 3-15-2011

Rasping EIFS expanded polystyrene EPS Foam

Rasping the foam is the same thing as sanding the foam. There are basicly two types of rasps for sanding expanded polystyrene (EPS) foam. One is the standard wooden rasp that sandpaper is attached to and the other is a metal rasp that has metal flakes welded to it to create a 12 grit sandpaper. The DuraRasp from demand products is aEIFS Repair DuraRasp EPS Foam very good rasp. They last forever. Here is a quick how to rasp; when rasping the expanded polystyrene (EPS) foam the EIFS applicator wants to rasp in circles. Never rasp up and down or straight across or you will dig holes in the foam. As an EIFS applicator you could imagine how you could really mess a expanded polystyrene (EPS) foam wall up with one of these metal rasps. Rasping in large circles makes it easy to sand the wal even. After completing the wall it is a good idea to go over the wall or section you are working on with a large half moon motion from your toes to above your head. This will make sure you sanded level and smooth. There is nothing worse than getting all done with your job and having it look all wavy.

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A tool every EIFS guy should have

A tool every EIFS guy should have

EIFS Repair ‘Tip Of The Day’ 3-8-2011

When it comes to the bottom of the building where it meets the ground or the concrete or even a roof line. I always see rough looking edges instead of a nice clean edge. If you use this tool you will never have a rough looking bottom edge again. The reason the edge looks so bad is that a normal corner tool will not fit at the bottom. With the Wind lock 45 degree corner tool you will have great looking edges every time. You do have to buy a left and right 45 degree corner tool.

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EIFS Repair – How to float the finish

EIFS Repair – Tip of The day 3-6-2011

How to float the finish coat.

When floating the EIFS (Exterior Insulation and Finish System) Finish coat you will need a plastic float, a trowel and a clean bucket of water with a brush. You will rub the plastic float over the finish on the wall in a circular motion. Every few circles you will clean the plastic float with the trowel. You will do this two times the first time quickly with a firm grip and some pressure on the float making sure to hit every spot on the wall and taking any and all trowel lines away. The second time will be much lighter to clean up any imperfections. After the first round with the float you should make sure you clean the float with your clean water and bucket brush. It is important not to put the float back on the wall while it is wet.

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 EIFS Repair – How to float the finish

EIFS – Boxing off your finish

EIFS Repair – Tip Of The Day – 3-4-11

Boxing off your finish.

Before you run your finish it is very important to make sure every bucket is exactly the same color. If it is not it is important to box the finish off. Which means you get an empty bucket and start pouring half a bucket into the empty and continue mixing the buckets and spinning them with a drill and paddle until all the buckets have been mixed together so all the finish is exactly the same color. If you are using tint packs this is a good idea and you should always have one guy appointed to mixing the tint packs in the finish.

note: it is a good idea to buy your finish for your job all at the same time as the finish comes in batches and one batch maybe a little different than the next which can alter the color a shade at times.

EIFS how too, box off your finish.

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EIFS (exterior insulation and finish system) also know as synthetic stucco

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Embed fiber glass cloth in the Alpha Base Coat

Exterior Insulation and Finish System installation process

The Alpha Base Coat is troweled on to the foam by an approved EIFS applicator and a fiber glass mesh is embedded into the base coat. The base coat is applied 1/8 of an inch thick. The fiber glass cloth comes in 38 inch and 48 inch rolls and is overlapped 2 inches. There can not be any eps foam that is not covered with fiber glass mesh. Including all corners. The base coat should be troweled on smooth and a corner tool used on all corners for a nice sharp look.

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What do we mean by prepping the EPS foam

Exterior Insulation and Finish System installation process

Prepping the eps foam is pretty straight forward. One of the beautiful things about EIFS is the ability to fix or change the appearance of an existing building or even do new and exciting things to a new construction project. In the prep stage the foam is rasped smooth, taking any highs or lows out of the surface. Chalk lines are popped to make all corners straight. Now for the fun stuff, the detail, which the sky is the limit here, from a simple ‘v’ groove to a ten foot two headed eagle coming out of the wall really anything is possible here. But more commonly, a nice crown molding and some columns.

Now that the foam has been prepped and the detail is on it is time for the base coat.

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