Wood Sill Extension (final)

Wood repairs for sashes, frames and sills.
johnleeke
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Wood Sill Extension (final)

Postby johnleeke » December 2nd, 2012, 2:44 pm

WPSC Window Standard

Number:
Status: [ ] submitted work method, [ ] proposed treatment standard, [x] final treatment standard
Update: 12/2/12
Author: Angel Corrales
References: Bob Yapp repair design
Contributors: John Leeke

Title of Treatment: Wood Sill Extension
Class of Treatment: [ ] Maintain, [ ] Stabilize, [x] Repair, [ ] Upgrade, [ ] Exception
Type of Treatment: [ ] Traditional, [x] Contemporary, [ ] Conservation

Condition to be Treated:
An earlier sill extension's joint has failed, letting water into the wall below.

Description:
Remove the old sill extension, clean up and even out the outer edge of the original sill and fasten on a new sill extension then seal, prime and paint. (This repair method was implemented on Test Windows 1 and 2 at the 2011 Summit by John Bales and Angel Corrales.)

Typical Procedure:

1. Assess conditions and measure for materials needed.
2. Make up extension sill stock.
3. Back prime stock.
4. Remove damaged sill extension.
5. Cut sill stock to fit opening, prime newly exposed wood.
6. Install sill extension. Pre-drill holes for nailing. Apply sealant in joint. Nail sill extension in place.
7. Sand the top surface with a belt sander so the original sill and the sill extension are flush all along the joint.
8. Caulk joint between the sill extension and the wall siding. Set nails and fill with glazing putty.
9. Prime, paint with two top coats.


Materials:
• Southern yellow pine, vertical grain, tight grain.
• Silicone adhesive caulk
• Nails, steel double hot-dipped
• Primer
• Paint

Quality of Results

Best Work: Sill joint is tight and flush with no gaps. Top surface sloped for proper drainage outward. Sealant and paint has even appearance and smooth surface.

Adequate Work: Minor gap (less than 1/8") in joint is visible, but well sealed. Top surface sloped for proper drainage outward. Sealant and paint has even appearance and smooth surface.

Inadequate Work: No slope. Open gap at joint. Gap at joint greater than 1/8". Sealant and painted surface is uneven and rough.

johnleeke
Posts: 375
Joined: April 13th, 2011, 7:34 pm
Full Name: John Leeke
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Re: Wood Sill Extension

Postby johnleeke » December 2nd, 2012, 3:31 pm

Thanks to Angel for documenting the good work on this sill during the Summit. Here are Angel's work notes, showing how this repair was done on test windows 1 and 2.

Amy, could you please make a drawing showing two figures, the one from the lower left and the one from the lower right corners of the notes? You can use the same drawing method, scale, scan method, etc., as you have used with other drawings, so the style for this matches your other drawings.
Attachments
SillExtensionWorkNotes.PNG
John
Standards Co-Founder
Standards Editor

http://www.HistoricHomeWorks.com

oculus
Posts: 66
Joined: May 18th, 2011, 12:15 am

Re: Wood Sill Extension (draft)

Postby oculus » December 15th, 2012, 2:02 pm

Here it is John. Sorry for the delay. I had the drawing drawn from a completely different angle. I hadn't seen Angel's notes.
Let me know of any changes or if you want the tiff files.
A.
Attachments
SKMBT_C45212121510350.jpg
SKMBT_C45212121510330.jpg
Amy Harrington McAuley
Oculus Fine Carpentry, Inc.
http://oculuswindow.blogspot.com/
oculuswindow@gmail.com

"Opportunity is missed by most people because it is dressed in overalls and looks like work"-T.Edison

johnleeke
Posts: 375
Joined: April 13th, 2011, 7:34 pm
Full Name: John Leeke
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Organization: Historic HomeWorks
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Re: Wood Sill Extension (draft)

Postby johnleeke » December 15th, 2012, 3:08 pm

Amy, excellent. Thank you. Go ahead and upload the hi-res tiffs.
John
Standards Co-Founder
Standards Editor

http://www.HistoricHomeWorks.com

oculus
Posts: 66
Joined: May 18th, 2011, 12:15 am

Re: Wood Sill Extension (draft)

Postby oculus » December 15th, 2012, 8:02 pm

Here ya go. Let me know if they look ok.
A.
Attachments
sill_extension1.tif
sill_extension2.tif
Amy Harrington McAuley
Oculus Fine Carpentry, Inc.
http://oculuswindow.blogspot.com/
oculuswindow@gmail.com

"Opportunity is missed by most people because it is dressed in overalls and looks like work"-T.Edison

johnleeke
Posts: 375
Joined: April 13th, 2011, 7:34 pm
Full Name: John Leeke
Location: Portland
Organization: Historic HomeWorks
Permissions: Yes
Location: Portland, Maine
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Re: Wood Sill Extension (draft)

Postby johnleeke » December 16th, 2012, 11:28 am

I can't open these tiff files. I know that I can open your other tiff files.

One of my programs suggests that these tiff files are compressed. Could you see if you can save the files in uncompressed tiff format? Thanks.
John
Standards Co-Founder
Standards Editor

http://www.HistoricHomeWorks.com

oculus
Posts: 66
Joined: May 18th, 2011, 12:15 am

Re: Wood Sill Extension (draft)

Postby oculus » December 17th, 2012, 1:53 pm

Try this.
A.
Attachments
sill_xtension2.tif
Amy Harrington McAuley
Oculus Fine Carpentry, Inc.
http://oculuswindow.blogspot.com/
oculuswindow@gmail.com

"Opportunity is missed by most people because it is dressed in overalls and looks like work"-T.Edison

oculus
Posts: 66
Joined: May 18th, 2011, 12:15 am

Re: Wood Sill Extension (draft)

Postby oculus » December 17th, 2012, 2:02 pm

The other drawing has to be re-scanned.
A.
Amy Harrington McAuley
Oculus Fine Carpentry, Inc.
http://oculuswindow.blogspot.com/
oculuswindow@gmail.com

"Opportunity is missed by most people because it is dressed in overalls and looks like work"-T.Edison

johnleeke
Posts: 375
Joined: April 13th, 2011, 7:34 pm
Full Name: John Leeke
Location: Portland
Organization: Historic HomeWorks
Permissions: Yes
Location: Portland, Maine
Contact:

Re: Wood Sill Extension (draft)

Postby johnleeke » December 17th, 2012, 2:50 pm

Amy, your second upload of sill_xtension2.tif is not working for me. All three of my graphics programs are reporting "unsupported compression method."

I think we went through this with your tiff files earlier this year and you got them in a format that I could use, but I don't know what you did on your end to resolve it.

If you can try another format, such as PNG (without compression, if you have a choice.)
John
Standards Co-Founder
Standards Editor

http://www.HistoricHomeWorks.com

oculus
Posts: 66
Joined: May 18th, 2011, 12:15 am

Re: Wood Sill Extension (draft)

Postby oculus » December 17th, 2012, 2:54 pm

Ok. Ill go back and see what we can come up with.
A.
Amy Harrington McAuley
Oculus Fine Carpentry, Inc.
http://oculuswindow.blogspot.com/
oculuswindow@gmail.com

"Opportunity is missed by most people because it is dressed in overalls and looks like work"-T.Edison


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