sheet vinyl seam

[Mrxman]

Hi There

I've been laying industrial grade padded sheet vinyl on our kitchen floor which looks great. With the help of a template I was able to do most of it but have now hit a snag.
The manufacturer said I needed to use a concave blade for the double cut where the seam is to avoid buckling. I tried twice and both times it looked pretty bad. I did a ton of practice runs. All looked terrible. Then I tried switching to a straight blade which went a much better when practicing. Could my concave blades (stanley) be of poor quality?
Any thoughts on what I might be doing wrong?

I am using one of those dolphin knifes btw.

 

[Deleted member 174758]

Did they mean concave or hooked?

 

[Mrxman]

Did they mean concave or hooked?

Concave. I used hooked blades elsewhere.

Today I did a cut just simply cutting a straight line and putting the two pieces together. Looked a whole lot better but you can still see the line slightly. They say it's possible to make the seam almost invisible but find it hard to see how that's possible on a bright coloured floor.

 

[Deleted member 174758]

On commercial hot welded vinyl you always see the joints, if only because the surface texture is different.

 

[Mrxman]

On commercial welded vinyl you always see the joints, if only because the surface texture is different

That's good news. Makes me feel like less of an amateur.

 

[Deleted member 174758]

Probably more important that the work is neat