Search found 23 matches

by Stephen Thwaites
Tue Apr 15, 2008 6:53 pm
Forum: Ask Our Pro's a Question
Topic: interesting developments
Replies: 24
Views: 14498

MG: I have absolutely no idea about what is available in your area In this corner of the world you can find double glazed vinyl windows with the following characterisitics: Casement U 0.29, SHGC 0.48 DH U 0.31, SHGC 0.54 These windows get these numbers by using SuperSpacer and Pilkington's low e. I ...
by Stephen Thwaites
Tue Apr 15, 2008 10:49 am
Forum: Ask Our Pro's a Question
Topic: interesting developments
Replies: 24
Views: 14498

Easy does it. We don’t need to beat ourselves up needing to wait for integrated solar electric cells so that windows can be net energy gainers. Certainly in the north, windows don’t need solar cells to be net energy gainers. But I’m biased. Besides being based in the second coldest national capital ...
by Stephen Thwaites
Mon Apr 14, 2008 10:38 pm
Forum: Ask Our Pro's a Question
Topic: Energy gains
Replies: 4
Views: 4526

The best way to consider the combined effect of window energy gains and losses, is to use some sort of modelling tool. If you are super keen try doing some sort of whole house model. I understand Energy-10 is good. But its more than most are willing to tackle. http://www.sbicouncil.org/store/e10.php...
by Stephen Thwaites
Thu Apr 10, 2008 9:43 am
Forum: Ask Our Pro's a Question
Topic: HELP ME CHOOSE THE RIGHT WINDOWS - PLEASE
Replies: 6
Views: 7771

You should consider North Star Windows - made just outside St. Thomas ON.

They should be in the same price range as your 3 contenders, use SuperSpacer and have the 'right' low e for a heating climate.


Good luck
by Stephen Thwaites
Fri Mar 28, 2008 8:17 am
Forum: Ask Our Pro's a Question
Topic: Need better condensation resistance than Pella...fiberglass?
Replies: 18
Views: 14901

wm2000: checked Rehau's UK and North American sites and couldn't find a english version. Did find another window w/ spacer recessed even deeper - my guess is 1 5/8" !! http://www.e2a.de/e2a/img/aktuell/200501/zukunfthaus/09%20Passivhauskomponenten/Fenst/Daten/D_Joschko_Winplus.pdf This is what ...
by Stephen Thwaites
Mon Mar 24, 2008 10:04 pm
Forum: Ask Our Pro's a Question
Topic: Need better condensation resistance than Pella...fiberglass?
Replies: 18
Views: 14901

Europeans seem to bury spacers more than North Americans. For interesting examples Google 'fenster' or see: http://www.rehau.de/files/Architekten-Prospekt_Passivhaus_793710.pdf Looks like they're burying their spacer about 15mm (1/2"+). Did a quick FramePLUS run (Canadian approx. equivalent to ...
by Stephen Thwaites
Wed Aug 22, 2007 8:01 pm
Forum: Ask Our Pro's a Question
Topic: Who still makes high solar heat gain windows?
Replies: 38
Views: 84847

Ultimately, in most areas low solar heat gain coatings have (often significant) advantage over high gain products in year-around applications. Actually, there is a study by Lawrence Berkley National Labs that disagrees with that statement. Google "Performance Criteria for Residential Zero Ener...
by Stephen Thwaites
Mon Dec 11, 2006 11:02 am
Forum: Ask Our Pro's a Question
Topic: Condensation Issues
Replies: 9
Views: 13014

On Double Hung meeting rail condensation: It is certainly true that the 'shelf effect' results in lower air velocity where glass meets sash, encouraging condensation to form. We see this 'shelf effect' when recessed triple glazed windows get condensation before double glazed doors. But, it is also t...
by Stephen Thwaites
Mon Oct 09, 2006 8:51 pm
Forum: Ask Our Pro's a Question
Topic: External condensation on vinyl windows
Replies: 9
Views: 20109

It is alot of money not to be able to see through glass, but exterior condensation usually doesn't last for very long. Once the sun pops up the condensation should disappear. So sleeping in can be an alternative.... However, if you really want to get rid of exterior condensation, ask for a window wi...
by Stephen Thwaites
Sat Jun 17, 2006 12:50 pm
Forum: Ask Our Pro's a Question
Topic: Question about warranties
Replies: 19
Views: 15590

Fibrex is certanly not artifucial fiberglass Actually it is. Fiberglass is woven cloth saturated with epoxy. The cloth plays a role similar to that of rebar in concrete. Fibrex is epoxy mixed with left over saw dust from the main Andersen wood window manufacturing plant. Fibreglass window frames ar...
by Stephen Thwaites
Wed Jun 14, 2006 7:52 pm
Forum: Ask Our Pro's a Question
Topic: Not impressed with Vinyl at all...Options..??
Replies: 26
Views: 18217

Sure, I could board up the windows too and put installation between them and call it a day. That would be most efficient, right? If your heating bill is bigger than your cooling bill, i would respectfully disagree. Unlike other elements of the building envelope, windows are not just a source of hea...
by Stephen Thwaites
Thu Apr 27, 2006 6:42 pm
Forum: Ask Our Pro's a Question
Topic: honeycomb versus foam in frame
Replies: 17
Views: 14873

Windowmann2000; The short answer is, we fabricate our own fglass windows from Omniglass profiles. Although foam filling is great marketting, in reality our motivation is more defensive than offensive. There is just no satisfaction (and not alot of referral business either) in blaming people's higher...
by Stephen Thwaites
Wed Apr 26, 2006 6:57 pm
Forum: Ask Our Pro's a Question
Topic: honeycomb versus foam in frame
Replies: 17
Views: 14873

In my view foam filling only really matters in two places: 1) Windows where the glass insulates alot better than the frame, such as triple glazing. In this case, foam filling helps the frame, somewhat, catch-up to the glass. 2) Single cavity frames. We've noticed that in a Northern climate, uninsula...
by Stephen Thwaites
Wed Apr 12, 2006 4:25 pm
Forum: Ask Our Pro's a Question
Topic: Thermal imaging/infrared leak detection? Know anything?
Replies: 5
Views: 4170

A knowledgeable infrared camera operator may be some help. Emphasis needs to placed on 'knowledgeable' and 'may' It is possible that the leak has wet the insulation in the wall (?do you insulate walls out there? :wink: ) If there is wet insulation, the camera may pick-up its lower insulating value. ...
by Stephen Thwaites
Mon Mar 27, 2006 9:08 pm
Forum: Ask Our Pro's a Question
Topic: Dual pane vs Triple pane for sound/noise control
Replies: 8
Views: 13285

It goes against common sense, but triple glazing does not normally attenuate sound better than double glazing from the Canadian BUilding Digest #240 Sound Transmission Through Windows -- available at: http://irc.nrc-cnrc.gc.ca/pubs/cbd/cbd240_e.html Sealed Triple Glazing Despite the widespread belie...