TiggerToo
Well-Known Member
Does anyone know of any reason why you might not want to use Sikaflex 291 to bond and seal an aluminium toerail to a GRP hull?
Sikaflex?
- Thread starter TiggerToo
- Start date
Georgio
Well-Known Member
Last winter I used it to bond aluminium framed windows to my GRP boat, a year on there are no loeaks and no problems.
The only potential issue will be removing the windows some time in the future but I hope that won't be my problem.
The only potential issue will be removing the windows some time in the future but I hope that won't be my problem.
VicS
Well-Known Member
Sikaflex 291 is a general purpose adhesive sealant. If you really mean to use Sikaflex for bonding then 292 is the one to use.
Described on the Sika website as [ QUOTE ]
Sikaflex®-292
is a one-component, thixotropic, high modulus, structural, polyurethane-based adhesive system. The product is used for a wide range of bonding applications, deck-to-hull bedding of chainplates, through-hull fittings and toe rails.
[/ QUOTE ] There are also special primers that you should use for best results
Described on the Sika website as [ QUOTE ]
Sikaflex®-292
is a one-component, thixotropic, high modulus, structural, polyurethane-based adhesive system. The product is used for a wide range of bonding applications, deck-to-hull bedding of chainplates, through-hull fittings and toe rails.
[/ QUOTE ] There are also special primers that you should use for best results
lexi
Well-Known Member
Only time you would not use that material is:
If you thought it would have to be removed soon
Or where two different materials of different thermal values would have to accomodate movement. There are not many instances of that on a boat. Plastic against stone or metal is an example. In that situation you would use Low modulous spec. Two part thioflex is good for that..it does accomodate movement and can be cut out easier and also overpainted.
Alex
If you thought it would have to be removed soon
Or where two different materials of different thermal values would have to accomodate movement. There are not many instances of that on a boat. Plastic against stone or metal is an example. In that situation you would use Low modulous spec. Two part thioflex is good for that..it does accomodate movement and can be cut out easier and also overpainted.
Alex
beneteau_305_553
Well-Known Member
Evostick Nail and Seal is the same product and will work fine. Only available in white though . Costs less than a fiver per tube from B&Q.
Amulet
Well-Known Member
Get a 1 inch thick catalogue from:
Marine and Industrial Sealants
Station Road,
Worstead,
Norwich,
Norfolk,
NR28 9SB
United Kingdom
Tel: +44 (0)1692 406822
Fax: +44 (0)1692 406866
It'll tell you everything you ever wanted to know about Sikaflex and all other comparable products. (The downside is the you're daughter will think you are the saddest old git in the world spending hours engrossed in a book about gloop - at least that's what happened to me.)
Marine and Industrial Sealants
Station Road,
Worstead,
Norwich,
Norfolk,
NR28 9SB
United Kingdom
Tel: +44 (0)1692 406822
Fax: +44 (0)1692 406866
It'll tell you everything you ever wanted to know about Sikaflex and all other comparable products. (The downside is the you're daughter will think you are the saddest old git in the world spending hours engrossed in a book about gloop - at least that's what happened to me.)
VicS
Well-Known Member
[ QUOTE ]
The downside is that your daughter will think you are the saddest old git in the world
[/ QUOTE ] reading a book on sealants makes no difference then! /forums/images/graemlins/laugh.gif
The downside is that your daughter will think you are the saddest old git in the world
[/ QUOTE ] reading a book on sealants makes no difference then! /forums/images/graemlins/laugh.gif
Clyde_Wanderer
Well-Known Member
Aye, and remember sikaflex must not be used on certain plastics, ie, through hull log paddle units, or plastic through hull cockpit drain units, as it can have an adverse effect on these plastics causing sudden failure and whatever else may follow.