DAP 4000

[TimothyB]

I saw this product out there and was curious if anyone had tried it for boat applications:

DAP 4000 Subfloor & Plywood Adhesive

it says "Bonds wet, frozen, treated or untreated lumber" so it sounds as if it might be good for boat work. And the price is definitely right at 2.50 a tube retail.

[TimothyB]

I saw this product out there and was curious if anyone had tried it for boat applications:

DAP 4000 Subfloor & Plywood Adhesive

it says "Bonds wet, frozen, treated or untreated lumber" so it sounds as if it might be good for boat work. And the price is definitely right at 2.50 a tube retail.

[TimothyB]

I saw this product out there and was curious if anyone had tried it for boat applications:

DAP 4000 Subfloor & Plywood Adhesive

it says "Bonds wet, frozen, treated or untreated lumber" so it sounds as if it might be good for boat work. And the price is definitely right at 2.50 a tube retail.

[RonW]

I have not used the dap brand, but most of the others. Subfloor adhesives are all pretty much the same, they are thick heavy bodied polyurethane glues that do require a lot of pressure, as in nailing the plywood subfloor down to the joist. I will tell you this, that after a few days, you will not get the subfloor loose from the joist without ripping the plywood and joist. They also have a tendency to have a thick glueline.
They do work and are good glues. But for clean work, get yourself a tube of P.L.Premium, It is the same glue with a few exceptions. It is much thinner and will leave a much thinner and cleaner glue line, and does not require the higher pressures as in subfloor glues.( it is also a lot stronger then the subfloor glues).

Here read this on polurethane glues.
http://www.fpl.fs.fed.us/documnts/pdf1998/vick98b.pdf

If you check the chart out at the end of the article, you will see that polyurethane glues actually outperforms resorcinol in dry wood.
The other 3 tests are with wet wood, and you will have more glue line failure and less wood failure with poly versus resorcinol, but look at the sheer strenghts of the failed wet wood tests. And surprisingly you will find that the poly glues are just a notch below resorcinol in actual sheer strenght. They are good glues, despite the contradiction some want to throw at them.And they are not effected by heat and cold as well as age like epoxy is.-- The much lower price is due to volume manufacturing and sales.

[ 02-09-2005, 09:55 AM: Message edited by: RonW ]

[RonW]

I have not used the dap brand, but most of the others. Subfloor adhesives are all pretty much the same, they are thick heavy bodied polyurethane glues that do require a lot of pressure, as in nailing the plywood subfloor down to the joist. I will tell you this, that after a few days, you will not get the subfloor loose from the joist without ripping the plywood and joist. They also have a tendency to have a thick glueline.
They do work and are good glues. But for clean work, get yourself a tube of P.L.Premium, It is the same glue with a few exceptions. It is much thinner and will leave a much thinner and cleaner glue line, and does not require the higher pressures as in subfloor glues.( it is also a lot stronger then the subfloor glues).

Here read this on polurethane glues.
http://www.fpl.fs.fed.us/documnts/pdf1998/vick98b.pdf

If you check the chart out at the end of the article, you will see that polyurethane glues actually outperforms resorcinol in dry wood.
The other 3 tests are with wet wood, and you will have more glue line failure and less wood failure with poly versus resorcinol, but look at the sheer strenghts of the failed wet wood tests. And surprisingly you will find that the poly glues are just a notch below resorcinol in actual sheer strenght. They are good glues, despite the contradiction some want to throw at them.And they are not effected by heat and cold as well as age like epoxy is.-- The much lower price is due to volume manufacturing and sales.

[ 02-09-2005, 09:55 AM: Message edited by: RonW ]

[RonW]

I have not used the dap brand, but most of the others. Subfloor adhesives are all pretty much the same, they are thick heavy bodied polyurethane glues that do require a lot of pressure, as in nailing the plywood subfloor down to the joist. I will tell you this, that after a few days, you will not get the subfloor loose from the joist without ripping the plywood and joist. They also have a tendency to have a thick glueline.
They do work and are good glues. But for clean work, get yourself a tube of P.L.Premium, It is the same glue with a few exceptions. It is much thinner and will leave a much thinner and cleaner glue line, and does not require the higher pressures as in subfloor glues.( it is also a lot stronger then the subfloor glues).

Here read this on polurethane glues.
http://www.fpl.fs.fed.us/documnts/pdf1998/vick98b.pdf

If you check the chart out at the end of the article, you will see that polyurethane glues actually outperforms resorcinol in dry wood.
The other 3 tests are with wet wood, and you will have more glue line failure and less wood failure with poly versus resorcinol, but look at the sheer strenghts of the failed wet wood tests. And surprisingly you will find that the poly glues are just a notch below resorcinol in actual sheer strenght. They are good glues, despite the contradiction some want to throw at them.And they are not effected by heat and cold as well as age like epoxy is.-- The much lower price is due to volume manufacturing and sales.

[ 02-09-2005, 09:55 AM: Message edited by: RonW ]

[ssor]

As with all adhesives they must be matched to the job. Occasionally I encounter such complete mismatches that I wonder if people believe that there is but one adhesive and it will work for everything. Furniture repair with construction adhesive??? :eek:

[ssor]

As with all adhesives they must be matched to the job. Occasionally I encounter such complete mismatches that I wonder if people believe that there is but one adhesive and it will work for everything. Furniture repair with construction adhesive??? :eek:

[ssor]

As with all adhesives they must be matched to the job. Occasionally I encounter such complete mismatches that I wonder if people believe that there is but one adhesive and it will work for everything. Furniture repair with construction adhesive??? :eek:

[Steve Miller]

One I know the answer to! I was the Dap Industrial rep for 9 years here in the NW. Sold a lot of the Dap 4000. It is NOT a polyurethane. It is an sbr rubber based adhesive. While it is a great product for what it is designed to do, it is not something I would use on a boat. It sticks to wet and frozen lumber since it is solvent based and when framing houses in the winter you need to be able to just go for it and lay the decking over the floor joists without having to worry if they are dry or warm enough.

Use epoxy or one of the polyurethane goo's.

[ 02-11-2005, 10:45 PM: Message edited by: Steve Miller ]

[Steve Miller]

One I know the answer to! I was the Dap Industrial rep for 9 years here in the NW. Sold a lot of the Dap 4000. It is NOT a polyurethane. It is an sbr rubber based adhesive. While it is a great product for what it is designed to do, it is not something I would use on a boat. It sticks to wet and frozen lumber since it is solvent based and when framing houses in the winter you need to be able to just go for it and lay the decking over the floor joists without having to worry if they are dry or warm enough.

Use epoxy or one of the polyurethane goo's.

[ 02-11-2005, 10:45 PM: Message edited by: Steve Miller ]

[Steve Miller]

One I know the answer to! I was the Dap Industrial rep for 9 years here in the NW. Sold a lot of the Dap 4000. It is NOT a polyurethane. It is an sbr rubber based adhesive. While it is a great product for what it is designed to do, it is not something I would use on a boat. It sticks to wet and frozen lumber since it is solvent based and when framing houses in the winter you need to be able to just go for it and lay the decking over the floor joists without having to worry if they are dry or warm enough.

Use epoxy or one of the polyurethane goo's.

[ 02-11-2005, 10:45 PM: Message edited by: Steve Miller ]