First drill the screws into the 4 corners of each mat leaving about 1 from the edges.
How to layer plywood and a stall mat.
Using a straight edge measure and mark the rubber mats.
This is much like some cf gyms ive seen.
Continue drilling screws down the length of the mat every 5 75 inches.
Measure the distance from the plywood to the edge of the osb on each side.
For a home gym over a carpeted floor put down a layer of 3 4 plywood and stall mats on top of that as discussed above regarding stall mats.
High pile carpet would still be an issue but typical carpet is fine.
Below describes the planned construction method.
No movement no complaints.
The designers plan is to have the plywood be seamless and flat into the floor that is completely covered by horse stall mat.
The sub floor is concrete.
Screw the final pieces of rubber in place.
Side by side with the plywood.
I could do a 1 2 plywood subfloor for the entire gym space for about 150 and then it would be level or i could just put anywhere from 1 2 to 1 5 only under the squat rack but i don t know how annoying that difference in elevation would be if the rest of the space is only a single layer of 3 4 stall mats from tsc.
I used wood screws and just sunk them a touch below the surface level of the mats.
Use your power drill to screw the stall mats to the 4 x 2 pieces of plywood with 1 25 wood screws.
I have basement gym and it s basically a regular stall mat over concrete.
Lay the four pieces of rubber mat on top of the osb.
Score the rubber mat with a box cutter or cut it with a reciprocating saw.
Coat the top layer of wood with linseed oil then a few coats of polyurethane.
Two 3 4 layers of osb topped with stall mats and 3 4 maple or other hardwood ply.
I mean honestly i don t know but it is so damn dense i don t see feel or have any signs of it giving.
It is assumed the matting will be a single layer of horse stall matting.
The plywood will help it feel like a solid gym floor like there s no carpet under it at all.