Hello, I received some great repair advice here 3-4 years ago and that board is still going strong. I have another old board that finally cracked. It is my go-to board and I would like to prolong its life. I have it sanded back about 2 inches around the crack. It is slightly soft where my fingers are by the crack. I am wondering whether I should just glass over the area a bit heavily or drill or sand through the glass and put some epoxy/ q-cell mix underneath. Doesnt have to be the perfect repair but something reasonable durable and within my limited skill set. Have some fiberglass, epoxy, and qcell filler.
thanks
Carefully check the other side for a similar soft spot, this a common problem with SB and fixing one side is frequently followed by the same repair on the other side. Best to fix/stiffen the entire area at once.
I don't think a superficial repair will last very long. This area is taking you front foot weight while slogging, and I suspect the reinforcement for this stopped just past the front foot straps.
The sandwich here is now compromised, without restoring the sandwich, it's always going to want to flex at the old crack and will give way at some stage.
I'd keep sanding until the crack disappears, then you may get away with a glass bog glass sandwich.
Agree with above. If you want to do it right I have a million offcuts of PVC or corecell that would do that nicely (free) so drop in if you want.
Mark
MOzCustoms
South Freo
Thank you for the offer , but it is a looong drive from the U.S. !
if I wanted to get something similar are you referring to a thin sheet of pvc? I am wondering if I might have something similar. I have a bit of carbon mat but that is really thin.
Ohh - WA on your profile I thought. Oops
PVC foam is the brown ish looking stuff you’re sanding thru. Divinycell bring the most common. Also Herex, Airex, Corecell (which is a little different but still perfect for that repair)
Clean sand angle 45°the sandwich foam up to the eps, thin seal foams (pvc flange and eps) with an epoxy qcell(+cabosil if you have), lay and lam some fiberglass all over overlaping on top around 3cm. This layer connected top layer, pvc to eps. When tacky fill cavity and around with epoxy qcell and let cure. Sand flat then lam over couple layers of fiber staggered, fill, sand and paint. I repair many creased or dinged surftech/boarworks/gong/etc sandwich boards like this seem to do the job.
When you say “seal foams” are you saying a thin layer in the cavity before the first layer of fiberglass? If so do I wait for that first layer to cure before the glass? Also do I need to chase these cracks in the eps or could I start filling now?
Totally depends if you’re using some PVC foam or doing a dodgy
I suggest now you’ve sanded so deep that the latter is no longer an option it’s going to need a ton of fill
if you wanted to do the dodgy kinda acceptable repair I’d have suggested something different
Select to expand quotedrnebe said..
When you say “seal foams” are you saying a thin layer in the cavity before the first layer of fiberglass? If so do I wait for that first layer to cure before the glass? Also do I need to chase these cracks in the eps or could I start filling now?
There is many way to do this repair. As Mark said best way, pro way, is to build a sandwich with same materials. But if you want to do it with what you have: do a cream resin qcell mix, seal the eps and pvc with this, thin layer, let it set a little, when no more runny but still soft and tacky lay fiberglass over and lam it. Again when still tacky fill cavity with a resin qcell "dry mix", lot of qcell so mix is like a thick past, push it in hole with fingers, impossible to spread. Let cure, sand flat, lam over and finish. The thick, syntactic foam mix will work like a core.
