Best for glazing...? i'm thinking of making some secondary glazing unit, which is the better...
i'm thinking of making some secondary glazing unit, which is the better material out of polycarbonate or acrylic. Whats the pros and cons for respectively and whats a fair price to pay envelope per square ft..
Cheers chaps.
polycarbonate have good thermal intrinsic worth, it's actually 200 times stronger than cup, is easy to cut and shape, and smaller quantity prone to scratching than acrylic base products.
I used to have my own skylight and door installation company when I lived in England.
Polycarbonate is used widely upon conservatory roofs, it comes contained by various thicknesses, some own a double layer 10mm gelatinous, that is newly under partly and inch, and you can get a triple branch which is about 25mm or one inch glutinous.
Although you are using it as a secondary fanlight unit, the optimum time between the two panes of chalice should be 20mm this has be proved the very best breadth for thermal value and crack pollution reduction.
The Swedish be the first to come out with double glazing, first nearby was aluminium frames and two pieces of cup that had an nouns gap between them, the problem near ali frames, they are cold and tend to create condensation, then they started using solid wood frames, these be much better but required maintenance and be expensive to produce, then they started to look at plastics and made hollow frames reinforced beside steel, now you hold the best of everything, low maintenance, and impartially cheap to produce, the double glazing has come a long route, England adopted the swedish style window, and now respectively glass porthole unit is hermetically sealed. I go to Home Depot and see they promote argon gas complete sealed unit, as a selling feature, we stopped using those heaps years agao, the gas escapes over time, and the window unit are prone to condensate between the panels, and in that is nothing you can do apart from replace them.
This is the best skylight unit on the American open market, and it's crap LOL.
A 4mm piece of glass a 20mm nouns gap, followed by another 4mm piece of chalice is excellent.
Between the glass they hold hollow aluminium glazing bars, these bar are filled next to silicone cristals, then the chalice is sealed using vitally a hot weld rubber system.
Its proven to be the very best system available, and have been used surrounded by Sweden and England for the last 20 years.
I love America for frequent things, but the windows and doors suck, compared to the standards we hold back contained by England, some companies provide value for money, others will provide a better characteristic locking system, but I have even so to see any window that even comes close to what is available contained by Europe.
Perhaps I should set about promoting my skill to the big boys and earn enough to retire impulsive LOL.
Good luck with your project.
Paul m
Both are to a certain extent easy to work but they do pick up muck, and they don't verbs very successfully. They are both comparatively weighty and acrylic can go brittle.
I prefer chalice - nothing looks worse than scratched plastic.
Have you costed out cup?
Acrylic (Perspex) is probably cheapest and more readily available - find suppliers within Yellow Pages. There are other systems which are temporary - using a type of polythene which you fix adjectives round your frame and taughten with a tresses dryer - cheap as chips, but quite successful. I think 3M did a system.
Answers: I'd offer acrylic a miss. It's a pain to drill, attracts dirt close to crazy, and is brittle and slightly more prone to scratching than polycarbonate (sometimes call Lexan) I've done the same article using 2mm polycarbonate sheeting, fixed to the window frame through strips of aluminium. I get my polycarbonate from Amari Plastics in London. I know they hold branches around the country. They will cut it to size for you too, for free. I only did mine as a impermanent measure, but within fact it looked trim enough to donate when I got proper lesser glazing installed. So now I own triple glazing in places! The price is (from memory) around lb70 for a 1.2 x 1.8m ish sheet (check next to Amari before you draw up your adjectives plan) How much your windows will cost will depend on how masses you can get out of respectively sheet, so it's worth spending a bit of time planning and tweaking your exact sizes to use as few sheets as possible.
Polycarbonate will also add considerably to the shelter of your windows, since it's almost impossible to break (it's what make bullet proof glass, bullet proof). It's worth considering how this would affect your competency to get out of the building if within was, for example, a fire, and making sure you still hold some kind of emergency escape route.