Wednesday, 10 December 2008
Finished Painting
I'm not certain about the putty used to fill the screw holes, it had skinned over but was still soft underneath. As a result sanding it flat wasn't very practical. However I got them fairly flat and it's something I can redo after the window is fitted.
When the lead arrives, I'll be ready to fit it. It's going to be tight getting it done before Christmas!
Weight built up - slight problem
I cleaned up eight of the cast iron weights and gave them a coat of hammerite. After much thinking about ways of connecting them, articulated so I could feed them in pairs into the pockets, I came up with this solution.
A length of stainless steel cable loops through the hole in the top weight down to the second weight. Both ends are clamped using a 12mm bolt with 2 holes drilled through, a washer and nut.
I had to keep the total length, after re-measuring, within 750mm to get full movement of the sashes. I just managed this, but realised I'd have to be really accurate tying it on to the sash cord.
I had calculated the weight of the sashes and set about adding squashed lead pipe to make up the weight. Easy enough to wind around but it took ages to mange to solder tack the spiral together. It was a cold night and iron took the heat away.
Disaster - I checked actual weight of the sashes using bathroom scales and I was short by 2kg on the made-up weights. More procrastination, I couldn't add enough extra weight without either increasing the width, or adding to the length. So it was back to the calculator and Plan B.
I'll use one cast iron weight and one proper (bought) lead weight. So not a total catastrophe as using the iron will reduce the lead I need to buy by half. I also think the ones I've made up will suit one of the slightly narrower window.
I've now ordered the lead and will be picking it up next week.
Friday, 5 December 2008
Shiny bits-hardware , note on paint
But it's good enough, especially as the inside parts will have a final coat after its all fitted.
To free up some space in the front room, with Christmas coming and trees going up, I fitted the pulleys. A good tap in fit. mmm shiny bits. Now its residing on the landing.
I've now got the sashes to paint and weight to sort out. Maybe I'll finish for Christmas?
Glazing the sashes
The bottom seals extend horizontally and the side pieces end butt up to them.
After tinkering with all packers I was happy to screw the beading/clamp on.
Note: I had counter bored the holes a few mm to much, the head sank a bit more than I expected.
I'm generally happy with the result. The glass held firmly, the seals are well compressed, it looks neat and nothing like a plastic DG window.
The only thing that bugs me is all the screw holes that need filling. It does mean I can dissemble the sashes if or when the units eventually fail. However I keep pondering if there could be a more elegant solution, possibly using the mechanical strength of the actual units ????
Last bit of glazing is to put a bead of silicone around. I choose only to do the outside, I'll wait and see if there is any need to do the inside. In the spirit of experimentation I did one with no masking, point proved, I can't gun and tool neatly without have to scrape loads off the glass and frame. The other one I spent 5 mins masking up and did a much neater job.
USE : Low modulus - Natural cure , this is flexible, and doesn't have the solvents that react badly with Sealed units and glass coatings.
The stuff I found is labeled as a frame sealant, not glazing sealant.
This pic shows the silicone with a layer of paint on it. Can also see the silicone bead doesn't fill the flat on top of the bevel.
Note: Consider adjusting the design bevel. Reducing the flat and the over-all sash thickness.
Also prior to painting I've filled the screw hole with linseed putty. I'm not sure about this but it's reccomended by the paint manufacturer so I'm trying it.
Monday, 1 December 2008
Weights - cheap option
If this works out I'll have saved about £300.
Linseed Oil painting
It's lovely stuff to use, pleasent smell and doesn't matter if you get it on your hands. The only problem was, due to slippy hands I dropped the tin. Small panic, but most landed on the news paper.
The first coat covers well and dried to matt finish
I think the third coat will give a lovely finish.
Tuesday, 25 November 2008
Glazing Ordered
These will be with foam type warm edge spacer and hot melt sealed, one toughened one standard, with pilkington K.
Total price now with only 15% VAT - £114.12
Monday, 24 November 2008
The final straight
1. One coat of raw linseed oil
2. Shellac on the glazing rebates
3. Order, and fit the glazing
4. Silicon on top of the seals?
5. Paint first coat
6. Paint second coat
7. Order and collect lead or steel
8. Take out the old window
9. Fit the new one, that should be fun.
10. Paint third coat
11. Plaster up
12. Architrave
13. Decorate.
14. Have a beer or two to celebrate
15. Start on the others
Now there's a plan........
Last bits for the frame
I cut out a radius on the bottom of parting beads to ensure water wont lodge behind them.
The staff beads are mitered. As my compound miter saw, compounds and miters as it likes I set the cross slide on the router at 45 and trimmed the ends to get them bang on.
Glueing up the frame
Clamp / Glazing Beads
After carefully marking out avoiding the vent holes, I drilled and counter sunk the clamp/beads
I came to the conclusion that gluing the clamping/glazing beads together would be a good idea. It'll be easier to paint, it shouldn't show up a join after painting, the seals will be easier to fit. so I glued and assembled them on to sashes with some grease proof paper in between to stop them sticking.
After fettling with the smoothing plane and some light sanding the sashes are ready for painting.
Seals experiments
I wasn't happy with amount of compression on the seals, only squashed from 3mm to 2mm. The ridges on seals were only just compressed. So another order this time for 4mm.
This worked out much better, all the ridges are almost completely squashed and the glass is held firmly. I think this should hold the rain out for a good while.
I then did a little experiment to see how muck clamping pressure is needed to compress the seals this much, so I could be happy with the screw spacing.
This showed me that a 200mm length of 4mm seal needs 15kg applied to compress it to 2mm.
I should think this won't be a problem to achieve with 1 1/2 no. 6 screws at 150mm spacing. The clamping wood is 15mm so I shouldn't think it will distort.
Cill rebate for backing cover
As it was it didn't take long with a chisel, I could have use the router, but at this point hitting something with a mallet felt good.
BIG Mistake
Pulleys and Fitch Fastner
Nasty little knot though.
Bottom Sash Bottom Rebate
1. To create a drip stop.
2. to create a cavity behind where air pressure will drop so water isn, blown up to the upstand on the rebate. (thats the theory anyway)
Just a quick zip on the router table.
Extra relief for the pulley
Hardware delivered, Paint delivered
I've also ordered and had delivered the linseed oil paint fro Holkam. I'm going to give it a go, after all the first window is suposed to test.
I've been busy over the weekend finishing off the wood working, all the piece are the front room ready to start painting.
I'll try and arrange the posts above to give a logical and efficent order although this wasn't the order I worked in, and I ended up wasting many hours.
Wednesday, 12 November 2008
Linseed Oil Paint
The linseed oil may react with the edge sealing of sealed units, so they recommend conventional paint or shellac in the rebate, this is also so sticky backed seals will stick. They are still looking into the effects on EPDM foam seals for me.
I've had my own little experiment going for the last week. Some Boiled Linseed Oil on some seal samples. There's no noticeable deterioration yet. So its looking good.
Friday, 7 November 2008
LEAD weighty choice
I also checked to see what the maximum size of weight would fit in the boxes - result 45mm or 1 1/4 inch square will go in easily with plenty of clearance for fitting .
Each sash will need around 16kg, so each window 32kg and each individual weight 8kg. At 45mm square they will need to be approx 390mm long, leaving loads of room for up and down movement. Knowing how long they have to be also allowed me to work out how long the pockets in the pulley rail will be to get the weights in.
With the other windows I've estimated I'll need around 160kg in total and I used this figure to get some prices. The obvious, easy to find companies must be making a big margin or are still selling stocks bought when the lead prices peaked. I eventually found a fairly local smelting company, I can collect from, that has quoted £1.60 per kilogram.
At this price I don't think I'll be smelting my own. But its still a possibility If I come across some scrap lead cheap enough.
HOWEVER - As there is plenty of up and down room in the boxes, I've done another quick calculation for using steel bar. At 45mm square it will still fit! even though I'd do each weight in two parts, segmented, so I wouldn't need a really long pocket. Some more ringing around needed to price up this option.
Sealed Units
1. Toughened glass, standard spacers £121
2. Toughened glass, "warm edge spacers" £134
3. Standard glass, standard spacers £85
4. Standard Glass, "warm edge spacers" 98.24
The K glass and 16mm space should get me the required U value if I through Building Control regs.
I'll need toughened glass on the lower sash for some of windows, as the cills are low, again part of the regs.
The warm edge spacer sound like a good idea to me, as standard aluminium spacers cold bridge between the glass. At £6.50 difference for each unit I think I'll try it out.
I think I'll leave ordering these until I've started on the painting, there's no sense having big bits of glass laying around our house for longer than neccesary.
Hardware Order In
I've ordered the required hardware for 7 windows from www.reddiseals.com the following should be arriving on Monday.
DESCRIPTION, QUANTITY,PRICE,COST
PUZ011PB Polished Brass Ball Pulley 28 £3.35 £93.80
CW511 Weatherpile in Self Adhesive Carrier 21 £1.20 £25.20
CW512 Weatherpile in Self Adhesive Carrier 7 £1.35 £9.45
FS819B Brass Fitch Fastener 14 £1.95 £27.30
FS828B Brass Sash Handle 14 £0.85 £11.90
FS826B Brass Sash Eye 7 £0.75 £5.25
FS834B Brass Pole Hook 1 £2.10 £2.10
FP851 Weekes Stop 3 £1.30 £3.90
REW0309 EPDM Tape 1 £24.00 £24.00
SF2002 Glazing Silicone 2 £2.25 £4.50 (although I dont think I'll need it in retrospect)
Subtotal: £207.40 Inc VAT and Shipping £254.28
So per window £36.33 (plus sash cord I've already got)
Also on the hardware front I had to elsewhere for the "Bridge Spacers" these are little plastic packers (5mm) that go around the unit and leave an air gap underneath. £1 for 20 + £6 postage.
You can see above that Ive ordered EPDM Tape. This is closed cell foam 3 x 9mm sticky backed one side. I'll see how it goes.
Tuesday, 28 October 2008
Hardware Order
The other main decision is the actual seal to the glazing. There are a few types of seal available so got some further research to do.
Whilst I'm at it I'll do some more research in to Linseed oil paints. I was going to go for conventional paints but from what I've read on various forums I'm tempted to go with "Holkham" paints.
If anyone has any experience, please let me know. I'm after the best solution and price doesn't mater.
Cord groove
Although the cord will only go about 200 down the sides the groove goes all the way. This can help stop water being driven on to the brush seals.
To make this a little steadier to cut, as its on the full glued up sashes, I knocked up another large fence. I'm sure it'll come in handy for other jobs.
I also need to widen the groove at the top to allow the pulley to pass. I'll wait until the hardware arrives to figure out the dimensions.
Back to the Job
The parting beads, Staff beads and weight separators.
Simple planing thicknessing and routering.
Client Approval
Making the horns
Now ready for assembly check
I used 3" No. 8 for the outside and inside lining and 4" N0 10's for the pulley stiles. Pilot drilled for the full screw length, going in to end grain I didn't want anything splitting.
The top rail fitted nicely, just pulling a bit twist in pulley stile back in to shape.
With this fitted I could mark up and cut the top linings.
The top linings are fitted with blocks, crude but effective.
I glued and screwed the blocks on, after marking up on the frame. I used a rule to make sure they where on straight.
So that's it (ish) for the frame. Picture to follow....Monday, 27 October 2008
Almost Ready for Frame Assembly
Mark out and drill the screw holes in cill.
Machine out notches in the outside lining, these will stop water pooling where they meet the cill.
Round of any sharp outside edges.
Why? - It is said, and I can believe it, paint doesn't like staying on 90 degree angles. Recommendations are to chamfer corners or round off.
Remember to stop the rounding off:-
1. On the cill where the outside lining will meet.
2. On the outside lining where the outside rail will butt up.
3. While the router's set up do the sash pieces where possible as well - time travel - step now....
I should have rounded off the notched in the outside lining as well.
Setting the Frame Width
I've also marked it up for drilling.
Pulley Stile Tops
A lot of things to remember from this picture.
1. I planed up two pieces square and flat and bolted them on the router table top. This gives me a flat frame to assemble the sashes on.
2. My cheap " Forged Steel" sash cramps are cheap for a reason, the adjustable back stops don't stay square to bar. Hence twist the rail when clamping. I need to drill, tap and put screws in to stop the movement. Or pack out with flat bladed screw drivers like I did this time.
3. Next time I'll chamfer the end of tenons so they don't push too much of the glue out of mortises.
4. After clamping pressure to close up joints, back off so the stiles aren't bent. Then check they're square.
5. Fox wedges do seem to work. Applying compression but without moving the joint
6. I can assemble and clamp up quick enough to work with PU adhesive.
(Time Travel - Round of the edges I can at before assembly - at the same time as the otside lining, cill and top lining rail, but first know the height, Oh No! chicken and egg time loop. Dr. please help?)
With the sashes glued up I clamped them as they'll be when closed and measured them. Then went back to the paper calculations. I'm glad I checked as I'd not accounted for a rebate on the bottom of the BS Bottom rail (Note: adjust cut list). Apart from that I was only about 1mm out. I'm happy with that.
Adding a 2mm clearance I then knew the height of pulley stile. These then needed cutting with a 5mm tongue added on.
To make sure they both ended up the same height I clamped them together with the bottom ends together. Then the top ends are machined square leaving the tongues.