UPDATED on February 26, 2016 with a new table (Image #3)If you plan to install exterior rigid foam on the walls of your house, how thick should the foam be? Although the GBA Web site has addressed this question several times in our Q&A column and various blogs, the question continues to perplex readers. New questions along these lines come our way regularly.The last time I answered the question was at the end of a long, very technical blog. In this blog, I’ll cut to the chase.When it comes to rigid foam sheathing, thick foam is better than thin foam. Thin foam is dangerous, because it reduces the ability of the wall to dry to the exterior without warming the sheathing enough to prevent moisture accumulation (a phenomenon that is usually but incorrectly called “condensation”).Fortunately, building scientists have calculated the minimum foam thickness required for different wall thicknesses and different climates. By following their recommendations, your wall sheathing (or the interior face of the rigid foam) will stay warm enough to prevent moisture accumulation during the winter.Because foam sheathing reduces the ability of a wall to dry to the exterior, all foam-sheathed walls must be able to dry to the interior. That means you don’t want any materials with a very low permeance on the interior of a foam-sheathed wall or between the studs. If you are building this type of wall, you should not include interior polyethylene or vinyl wallpaper, nor should you install any closed-cell spray foam between the studs. It’s perfectly acceptable to fill the stud bays with open-cell spray foam, however, since open-cell foam is vapor-permeable.To sum up, there are two important points to remember about foam-sheathed walls:Of course, foam-sheathed walls must comply with existing building codes.… This article is only available to GBA Prime Members Start Free Trial Already a member? Log in Sign up for a free trial and get instant access to this article as well as GBA’s complete library of premium articles and construction details.
The second-round match was delayed because the day session ran longer than expected — Venus Williams needed three sets to win her match there — and the first contest of the night session was a men’s match that lasted five sets. Konta said there was discussion of moving her match to Court 3, but that the seagulls that dot the tournament grounds had left their, um, mark there.According to an Australian Open spokeswoman, Muruguzu and Konta were given the option of having Court 3 cleaned; it should have taken 15 minutes. But the players heard there was rain in the forecast, so decided to stay put, because Margaret Court Arena has a roof and Court 3 does not.The tournament said the previous latest start on record in Melbourne was 11:59 p.m. for a women’s match between Elise Mertens and Daria Gavrilova a year ago.The record for latest finish? That’s 4:34 a.m., for a 2008 men’s match between Lleyton Hewitt and Marcos Baghdatis.“It was actually a very good match,” Konta said about her low-attendance loss. “It’s unfortunate more people couldn’t enjoy it during the day.”ADVERTISEMENT LATEST STORIES Spain’s Garbine Muguruza, left, is congratulated by Britain’s Johanna Konta after winning their second round match at the Australian Open tennis championships in Melbourne, Australia, Friday, Jan. 18, 2019. (AP Photo/Mark Baker)MELBOURNE, Australia — Better late than never, right?Garbine Muguruza finally won what is believed to be the latest-starting match in Australian Open history, edging Johanna Konta 6-4, 6-7 (3), 7-5 in an after-midnight marathon that began at 12:30 a.m. and concluded at 3:12 a.m. on Friday.ADVERTISEMENT CJ Perez raring to test his mettle vs Chris Ross, Beermen in PBA debut SEA Games: Biñan football stadium stands out in preparedness, completion SEA Games: Biñan football stadium stands out in preparedness, completion LOOK: Joyce Pring goes public with engagement to Juancho Triviño LOOK: Joyce Pring goes public with engagement to Juancho Triviño Private companies step in to help SEA Games hosting View comments “Not ideal. Not ideal for anyone. I don’t think it’s ideal for anyone to do any physical activity when it’s bedtime,” Konta said with a chuckle. “Both of us were in the same boat, so both of us had to deal with the same challenge.”A few hundred spectators dotted the stands at Margaret Court Arena, which has a seating capacity of 7,500.FEATURED STORIESSPORTSPrivate companies step in to help SEA Games hostingSPORTSUrgent reply from Philippine football chiefSPORTSWin or don’t eat: the Philippines’ poverty-driven, world-beating pool starsOne woman took up three seats to herself for a bit of a snooze.“I seriously can’t believe there’s people watching us at 3:15,” two-time major champion Muguruza said in an on-court interview, then joked: “Like, who cares?” Muguruza, a former No. 1-ranked player who is seeded 18th, managed to convert the only two service breaks of the match, including in the last game.Asked afterward what she planned to do, Muguruza had a simple plan: breakfast.The biggest beneficiary of the timing of it all might very well wind up being Timea Bacsinszky, the Swiss player who will face Spain’s Muguruza on Saturday for a spot in the fourth round.Bacsinszky’s victory on Thursday ended more than 10½ hours earlier than Muguruza’s win did.“I will recover as much as I can, because it was a tough match,” said Muguruza, who won the French Open in 2016 and Wimbledon in 2017, but has never been past the quarterfinals at the Australian Open. “Tomorrow is a day off, but I have to be (focused). The tournament is not over.”Sports Related Videospowered by AdSparcRead Next Don’t miss out on the latest news and information. MOST READ PH underwater hockey team aims to make waves in SEA Games PLAY LIST 02:42PH underwater hockey team aims to make waves in SEA Games01:44Philippines marks anniversary of massacre with calls for justice01:19Fire erupts in Barangay Tatalon in Quezon City01:07Trump talks impeachment while meeting NCAA athletes02:49World-class track facilities installed at NCC for SEA Games02:11Trump awards medals to Jon Voight, Alison Krauss Is Luis Manzano planning to propose to Jessy Mendiola? TS Kammuri to enter PAR possibly a day after SEA Games opening SEA Games hosting troubles anger Duterte