glue

[nickk]

advice needed; what glue should i use on wood for exterior use ,contact surfaces are 70mm wide.thanks in advance.

 

[Hitch]

I'd look towards a polyurethane glue.
Although you can get basic pva wood glues in exterior grade.

What is it, and what timber?

 

[brightspark]

if u want the real deal here http://www.agwoodcare.co.uk/Item/resinmite?gclid=CM_dvM-R3L4CFS3HtAodJhgADA

 

[Parm]

Gorilla glue is also good, I use it on all my outdoor wood projects

 

[bigegg]

"gorilla glue" is a polyurethane.

I use screwfix exterior PVA for my wood projects - reinforced with screws usually, however.
I took a bench apart last year that I made about four years ago, and has been outside ever since - the wood gave way before the glue.

 

[Parm]

"gorilla glue" is a polyurethane.

I use screwfix exterior PVA for my wood projects - reinforced with screws usually, however.
I took a bench apart last year that I made about four years ago, and has been outside ever since - the wood gave way before the glue.

I stand corrected, and yes I've done the same. I made a simple little box out of some old pallets to hold wood for the patio wood burner, everything eventually rotted apart from the sections glued together. It eventually went into the wood burner itself !

 

[DrNik]

Is gorilla glue the stuff that foams, I've used that stuff and its great, it takes up all the gaps in my wobbly joints...

 

[Hitch]

Is gorilla glue the stuff that foams, I've used that stuff and its great, it takes up all the gaps in my wobbly joints...

Like a delicate expanding foam

 

[bigegg]

I stand corrected, and yes I've done the same. I made a simple little box out of some old pallets to hold wood for the patio wood burner, everything eventually rotted apart from the sections glued together. It eventually went into the wood burner itself !

I wasn't correcting, I was clarifying.
Oh. NOW I'm correcting

 

[the snooper]

Is gorilla glue the stuff that foams, I've used that stuff and its great, it takes up all the gaps in my wobbly joints...

you should probably see a doctor

 

[nickk]

"gorilla glue" is a polyurethane.

I use screwfix exterior PVA for my wood projects - reinforced with screws usually, however.
I took a bench apart last year that I made about four years ago, and has been outside ever since - the wood gave way before the glue.

so did you use pva on it?

 

[nickk]

I'd look towards a polyurethane glue.
Although you can get basic pva wood glues in exterior grade.

What is it, and what timber?

it is a victorian costermongers barrow so the chassis rails are softwood [still solid] & i want to fit 25mm marine ply as a floor ,to make a shepherds hut for my son.

 

[bigegg]

so did you use pva on it?

Yes.

 

[bigegg]

it is a victorian costermongers barrow so the chassis rails are softwood [still solid] & i want to fit 25mm marine ply as a floor ,to make a shepherds hut for my son.

If it's technically going to be inside the hut, then exterior PVA is more than enough.
Gorilla Glue et al. is only really needed for seriously exposed stuff - that will be outside halfway up a mountain, or in US/Canada winters.

 

[DrNik]

If it's technically going to be inside the hut, then exterior PVA is more than enough.
Gorilla Glue et al. is only really needed for seriously exposed stuff - that will be outside halfway up a mountain, or in US/Canada winters.

Don't forget our amazing weather, sometimes feels like we are halfway up a mountain or the seasons are now, autumn,autumn,spring,autumn

 

[bigegg]

I think of it as "warm rainy season" and "cold rainy season"

 

[nickk]

bigg egg; its underneath the barrow so not rained on directly or exposed to splash-up.

 

[bigegg]

bigg egg; its underneath the barrow so not rained on directly or exposed to splash-up.

Waterproof PVA then - although for a floor, I would be tempted to not glue it at all, and use screws. If you get a roof leak etc, the ply will rot (even marine ply), and will need replacing. There's also possibly the issue of the timber expanding (which the ply won't) and splitting if it's glued to the ply. - and it WILL expand, and shrink, A LOT over a year - you could expect 5mm+ over a 1m expanse

 

[nickk]

Waterproof PVA then - although for a floor, I would be tempted to not glue it at all, and use screws. If you get a roof leak etc, the ply will rot (even marine ply), and will need replacing. There's also possibly the issue of the timber expanding (which the ply won't) and splitting if it's glued to the ply. - and it WILL expand, and shrink, A LOT over a year - you could expect 5mm+ over a 1m expanse

how is 110+ yr old wood going to move that readily? i didn't want any screws as its a likely start place for water ingress.

 

[PhillipM]

Polyurethane with a controlled gap thickness to allow for flex would by my choice for that then.