JWS Marine Services

Category: Maintenance

  • Westerly Conway Osmosis Treatment, followed by application of Copper Coat

    Came to JWS late 2012, with Osmosis in the hull from the offset we know this wasn’t going to be a straight forward treatment.
    First hurdle was making the decision whether to machine or hand peel her, in the end a combination of the two was carried out.
    We generally tent up the hull mainly to protect the blasted hull, before proceeding to the hot-vac treatment, however with this project we tented her then left her with inferred heaters on localized seeping areas while tented for 7 week in total to try and draw the moisture from her hull.
    While in the care of JWS the owner opted for some other items of work to be undertaken, such as the application of Copper Coat, new headlining in the saloon, and varnishing of the floor boards new treadmaster paint applied to the deck and also the replacement of all seacocks with TruDesign
    The following images show the Osmosis treatment.
    1-3 – Hull before work has started
    4-7 Hull peeled
    8-9 Blasted
    10-12 Inferred on seeping areas
    13-15 Hot-vac treatment
    16-18 Application of the extra layers
    19-23 Osmosis Epoxy coatings
    24-26 Copper Coat applied

    There was water seeping throughthe hull from the keel bolts.
    To repair this we grinded back the area on both Port and Starboard side to allow the water to be released.
    2 infered heaters where put on both areas and allowed to dry over 1 week.
    The area was then cleaned and prepped for re-lamination back to the orginal thickness.

    Once this was completed we moved on the applying the stifferning layers in varioes areas of hull using 450csm and 600csm.

    Next step was to bring her into the shed for the hot vac treatment, in most cases we would only have to carryout 1 course of Hot-vac treament in this instance due to the high moisture content trapped in the hull we had to carryout 2 rounds of the hot-vac treatment.

    It was agreed to add an additional later of matting to to the hull, this was done using 3 layers of 450 CSm and 2 layers of 600csm.

    Now that the layers have curred we carried on with the application of AMC-100 Epoxy coatings.
    We applied 1 layer, the hull was then fill and faired off before appliying the further 4 coats.

    The treatment was completed and we finished with an application of Copper Coat.

    Please click on the link to see the other work carried our during her stay –

    Westerly Conway – Refurbishment of internal floors, headlining and Treadcote

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  • Hand varnish of Transom on a Grand Banks 46

    This was just one section of the project carried out on the Grand Banks 2018/19, was to hand varnish the transom.

    The first job was to tape and prep the transom for removal of old varnish, and to protect against the varnish chemical remover.
    Next we removed all the fitting from the transom to access the working area, these fittings were; 2 stainless steel corner straps, 1 boarding ladder, 1 nav-light and a bathing platform, all were refitted on completion of varnish.
    The old varnish was stripped using a chemical remover, the whole areas was sanded and prepped ready for the application of varnish.
    We applied 18 coats of varnish, sanding in between each coat.
    Varnished used in this application was Epifanes clear varnish along with Epifanes PU, anti UV varnish, with an added drying agent mixed into the single pack.

    Take alook at our other jobs on her –

    Respray of Grand Banks 46Galley storage Fabrication on a Grand Banks

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  • Hull Respray – Grand Banks 46

    A Returning Customer, the Grand banks 46 was re-sprayed late 2018.
    First we taped and prepped the hull for sanding and erect/adjust staging as required.
    All planks and plank seams were sanded.
    A wood primer was applied to all required areas, 4 coats in total, sanding between each coat.
    All areas that were primed were then sanded, de-dusted and prepped for the hull’s pre-coat, 4 coats of Internationals PreKote were then applied
    Next was to tent up the Super structure to protect from over spray, the a re-sand of the area ready for Top-coat.
    The working area was then sprayed with 4 coats of Awlcraft 2000 Topcoat, colour used in this application was Snow White.

    A final light sand around all areas worked, the whole area then buffed to finish off.

    We have also carried out this other work on the Grand Banks please click on the links below to take a look –

    Hand varnish of Transom on a Grand Banks 46 Galley Fabrication

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  • Hull Re-spray on a 24ft Sailing yacht (Bilge keel)

    This 24ft bilge keel had a couple of jobs for us to complete, back in late 2012 mainly the respray of the hull and lines, however the owner opted to have the hull blasted to remove old anti-foul.
    While she was in the shed we fitted a new rubbing strake.

    Hull blast along with both keels, the keel were then epoxy coated with 5 coats of Corro-tech.
    2 keel seams applied using Sikaflex.
    2 coats of primer (Gel shield 2000) followed by 2 coats of International Micron Extra in Black.
    The hull was then re-taped and a new boot-top line was applied using Trilux (White)
    The Respray – Upon receiving the boat we carried out a walk around inspection to check for any defects, all are noted and the owner was informed.
    First we sanded the hull flat, then taped up and covered the boat with polythene sheeting.
    We primed the hull with 5 coats of 545 epoxy primer.
    This was followed by a complete sand of the hull, all fine line tape was replaced if required.
    Any filling and faring of the hull was done, touching in with 545 and re-sanding where required.

    The topside were the sprayed with Awlcraft 2000, Flag Blue, this was allows to harden off for 2 days, we the re-taped in preparation to paint the light blue lines down the hull, the ine areas were sanded and prepper, the 5 coats applied of Awlcraft, SkyBlue was applied.
    While in the workshop the owner opted to have a new rubbing strake fitted, JWs supplied all the parts for this, they were all fitted and finished with a sikaflex bead join around the rubbing strake.

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  • Westerly Conway – Refurbishment of internal floors, headlining and Treadcote

    Boat was already with us for a Full osmosis treatment followed by a Copper coat application.
    While in the workshop the owner opted to have some areas of the boat refurbished, starting with the headlining’
    We removed all the old headlining from the saloon and front cabin, on removal once the headlining materials was separated from the ply wood panels, each panel was assess to see if it could be re-used.

    All surface areas were cleaned in preparation for the new headlining to go back up. Once up they were finished off with teak battening, varnished with 2 coats of Gloss varnish.

    Quite a few of the panles had to be replaced so we set about measuring and cutting the new panels from ply, these were thenc covered in Nautolex Vinyl, the colour used in this application was Ivory.

    All surfaces were clean and prepped ready for the new headlining to be refitted.

    Once fitted we finsihed it off with teak battening which we applied 2 coats of Gloss varnish.

    The flooring in the saloon and the cockpit stairs were in need of some TLC, so we removed all the loose flooring, taped up ready for sanding, sanded then applied 6 coats of varnish.

    The tread on the deck was looking dull and faded, so first we gave all the tread a good clean with Treadmaster cleaner, we followed this up with the application of Treadcote paint, the colour used here was fawn.

    We also carried out a Osmosis Treament followed by the application of Copper coat, please click the link below to take a look –

    Westerly Conway Osmosis Treatment, followed by application of Copper Coat

    Gallery

  • Capping and Side slat replacement on a Fisher

    As you will see the boats capping’s and side slat’s were looking rather tired, so we removed all and took the up to the workshop for templating and cutting.

    Once all sections were cut to size, these were re-fitted to the boat, the owner opted to carry out the varnishing himself.

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  • Osmosis Treatment on a Westerly Discuss 33

    This boat came to us in 2018 for Osmosis Treatment followed by hull reinforcement
    While with us she also had her thru hulls replaced and her rudder split, cleaned and re-bonded.

    Normal procedure to start with a hull peel, however due to the high moisture levels a 2nd peel was required.
    This was followed by a hull blast.
    The hull was hot washed 10 time then she was moved into the shed for tenting up.
    Next was the hot vac hull cure treatment, generally only 1 course is required but with this Discuss her moisture content was so high she needed 4 courses.

    As she has a second peel and quite a lot of mat had to be removed to aid drying, we applied additional hull reinforcement on both the Port and Starboard side.
    14 patches were agreed by the surveyor for reinforcement and comprised of 1 layer of 450 csm powder and the 2 layers of 600 csm bound matting with a tapered area of 25mm on all layers and between the keels will be 4 layers of 450 csm.
    The hull was given a sand in preparation for the Epoxy bonding coat.
    The hull was filled and fared before applying the further 4 Epoxy Osmosis coatings.

    We finished the application with conventional Primer and Anti-foul.

    During the Osmosis treatment both keels were blasted and 5 coats of Corro-tech epoxy were applied and new keel seams were done.

    We also serviced and replaced the thru hulls on board

    While in the shed receiving her osmosis treatment we also carried out some work to her rudder, before we could start the steering gear had to be removed.
    With the yards assistance we lifted the boat to remove the rudder, upon removal of the rudder all bearing and seals were checked, this discuss needed a new upper and lower bearing set and a new lip seal, all of which we supplied and fitted.

    All the old coating was sanded form the rudder and taken back to good glass, all blisters were removed form the laminate by grinding, and ground holes were filled with 830 epoxy filler and sanded fair.
    The rudder was split in half and all foam from inside removed this allowed us to check the tangs and bonding.
    The inside was grinded and prepped for the re-joining of the rudder sides.
    Both sides were bonded together using a hi-strength gravicol bonding paste which was allows to cure and then this was laminated with 3 layers of 280 woven cloth and epoxy resin.
    It was then filled and fared with 830 epoxy filler and sanded fare.
    The rudder was then epoxied to the same spec as the hull, primed and antifouled.

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  • Princess 360 insurance claim for Fire Damage

    Came to us in April 2013 as an insurance claim after a fire had started in the engine bay, both engines and tanks had to be removed, the bay was then cleaned using an industrial degreaser, sanded and 2 coats of Gel coat applied. Then engines and tanks were re-fitted. The headlining had significant fire damage so all panels were removed, any repairs required were carried out and new vinyl and popper fitted then the panel were re-fitted. While the boat was in our workshop the owner opted to have the seating area and helm seat recovered after several cleaning attempts did not remove the smoke damage or oil completely. Also aside from the insurance work, the owner opted to have all new windows throughout.

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