Kiwigrip application experience

LadyInBed

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Joined
2 Sep 2001
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Me - Zumerzet Boat - Wareham
montymariner.co.uk
As my Treadmaster was looking decidedly shabby after at least 25 years service I decided to replace it with Kiwigrip.
The Treadmaster was stuck down using what looks like two part epoxy and getting it off was a challenge, I had to use a knife blade on a multitool (resharpened at least twice) and a belt sander with a 60 grit belt which left the gelcoat nicely roughed up but any divots in the gelcoat needed filling as they showed when the Kiwigrip was applied.
When applying the Kiwigrip on a test board I found that the end result using the roller they recommend and sell along with the Kiwigrip was much too course / spiky and I felt that dirt (bird shit) trapped between the spikes would be difficult to get rid of, but using a cheap sponge mini roller left what I think was a lovely finish. Also using the course roller was a long process, the Kiwigrip had to be ladled on then spread and the thickness of the Kiwigrip in the 'troughs' after rolling was hard to judge and I found it to be very thin in places. If you want the heavy spiky finish I would recommend that you put one or two coats on using a sponge roller first to get a base thickness.
Getting rid of the Treadmaster and glue took the most time and I found that all the dark grey glue had to go as even with two coats of Kiwigrip the dark patches showed through - I had chosen to use Cream Kewigrip, maybe a darker colour would have been easier!
When I masked up the areas I opted to use pointy corners as masking 'round' corners was very time consuming. I found that I had to mask several areas at a time as
applying the Kiwigrip using the sponge roller was a quick and easy job. I loaded the roller direct from the tin by rolling it across the surface of the thick Kiwigrip. A roller full was only enough to cover about a square foot.
I ended up applying three coats, as having masked up four areas at a time, I could do a coat on each area then because the day was warm and the coat fairly thin, by the time I'd finished the fourth area the first was touch dry so I could go round and redo each area to get the three coats.
There was no problem removing the masking, it lifted and left a clean edge behind.
I don't think it will last 25 years, but it will be a lot easier to redo or touch up.
 
An interesting report, thanks. I used it on my cockpit sole and agree that it is a bit coarse with the supplied roller. In due course I intend to do my decks so I’ll try out some finer sponge rollers. Any chance of a photo of the roller texture and finished surface?
 
Just finished 42 ft boat with light Grey kiwi grip taped of the corners then used a craft knife to round the corners , got rid of my tread master with a grinder 2 days of hell , just be very careful , but allowed to get most of the epoxy off which was thick in places
difference to the OP was I used the roller provided , it definitely has a rougher finish but tried it first on a plank of plywood then walked over in bare feet and had 8 year old sit on it to see it it would hurt but no problems at all to walk on
pull masking tape up asap
spread with a paintbrush to make it even , try not to do in high humidity its a nightmare to cure and must have 24 hours to dry so no rain or it runs badly , (found out in a squall)
lightly go over with the roller again when finished to remove air bubbles
IMG-20180821-WA0004.jpg
 
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I would endorse the bit about high humidity. I did mine recently mainly in strong sunlight - the humidity in early morning and evening took it outside the kiwigrip supplied graph - although to get the whole application/drying period within that envelope would be pretty difficult in the UK.

Only did one coat and after getting a good finish on the first part of the coach roof I panicked about not having enough so the section in front of that is pretty patchy/thin - I've got enough left to go over that again some time. Overall my application was OK but some variation in texture e.g where I opted to do too large a section and it tacked before I could get the roller on it - BTW don't do what I did in one small section - wetting the roller to "re-wet" the drying paint - it doesn't work, whereas adding water to the paint before brushing it on does.
One problem is the need to wash out the roller fairly frequently - I've got a lot of dried bits off the roller in places - I expect they will wear off in time.
 
My experience was that normal cheap masking tape didn't seem up to the job. Where we had used cut vinyl for the ends and corners it was fine but the masking tape allowed the Kiwigrip to bleed under.
 
My experience was that normal cheap masking tape didn't seem up to the job. Where we had used cut vinyl for the ends and corners it was fine but the masking tape allowed the Kiwigrip to bleed under.
The best stuff I used was Scotch 50mm width in which I could cut a curve with a Stanley knife. I also had some quite stretchy 3M stuff which was a pig to remove
 
The best stuff I used was Scotch 50mm width in which I could cut a curve with a Stanley knife. I also had some quite stretchy 3M stuff which was a pig to remove

Yes. Go for quality making tape or vinyl ta[e or cut vinyl. The roller tends to lift the tape.
 
I used frog tape it has no bleed , used this for pinstripe line and anti foul line and kiwigrip with no issues , blue tape is good to but leave it on for a few days and its like super glue.
got to say to the OPs post if you go with the kiwi roller you do get more dirt into the crevices ,
 
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