Rent a quality nailer if you don't own one. Brazillian walnut is extremely hard & dense & very brittle. The tongues are going to splinter worse than hickory. I'm gonna forewarn ya about splinters. They're going to fester in your hand & get so sore you can't hardly touch them.
As for putting a coat of poly over the factory finish. DON'T. #1, you're going to void the factory warranty, #2, you're going to get finish failure. It's the homeowners job to take care of the dogs not scratching the floor, not yours. If you're trying to sell the job as being impervious to dogs, you're doing your client a big disservice. Be honest with him, his dogs are going to scratch the finish if they're at all rowdy & if that's a concern, he should choose a different flooring option.
As for putting a coat of poly over the factory finish. DON'T. #1, you're going to void the factory warranty, #2, you're going to get finish failure. It's the homeowners job to take care of the dogs not scratching the floor, not yours. If you're trying to sell the job as being impervious to dogs, you're doing your client a big disservice. Be honest with him, his dogs are going to scratch the finish if they're at all rowdy & if that's a concern, he should choose a different flooring option.
