Brick Windowsill Replacement Question - Building & Construction - DIY Chatroom Home Improvement Forum

Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Building & Construction


Thread Tools Display Modes
Old 06-24-2011, 12:41 PM   #1
Join Date: Jun 2011
Posts: 2
Rewards Points: 10

Brick Windowsill replacement question

Hi all;

My house was built in 1986 and features brick window sills (bricks on edge). Being in southern Canada we get lots of freezing and thawing; so as you may expect the sills have started to crumble. Having just replaced my windows I'm looking to replace the sills. I have purchased precast concrete window sills (in 32" length) which I plan on cutting to fit. I am going to start the replacement and would appreciate any tips. To get it done I was going to do the following:

1) Remove old window sill bricks and mortar below (Done)
2) I have poly sheet running from below the window which I will setup to go under the new sill;
3) Cut sills to length;
4) Build a a support structure to support the brick once its in place (so it doesn't droop before the concrete sets), each 32" sill piece weighs ~55lbs
5) Put some dowels down where I want the drip holes to be in the mortar (not sure if this is the best way or if its needed)
6) Lay a layer of mortar (on top of poly which comes from the window frames); put new sills in place
7) Support the sill so it doesn't sag
8) clean up mortar joints
9) Caulk joints between sill pieces with good grey caulking (something like OSI Quad)

Anything I'm missing? Will I need to support the sills?




Last edited by scottjgibson; 06-24-2011 at 12:44 PM. Reason: fixed numbering
scottjgibson is offline   Reply With Quote
Old 07-19-2011, 10:45 AM   #2
Join Date: Jul 2011
Posts: 1
Rewards Points: 10

Remove rock window sill

Hi Scott,

have you managed to change the rock window sill yet ? Because I have the same problem, and I would like to change it too. Can you share it with me.



kenrepa is offline   Reply With Quote
Old 07-19-2011, 10:48 AM   #3
Join Date: Jun 2011
Posts: 2
Rewards Points: 10


Yeah I have completed it and it went quite well. I followed the procedure explained in my earlier post. I'll post some pictures tonight as I took pictures along the way.

scottjgibson is offline   Reply With Quote

brick , masonry , window sills

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
replacement window question hitmehhh Building & Construction 16 11-23-2010 07:33 PM
Frost proof Hose bid replacement question Crush Plumbing 1 07-25-2009 04:42 PM
Brick question Building & Construction 1 10-18-2005 09:28 AM
Torch Roof Replacement Question Chad262 Roofing/Siding 6 09-21-2005 07:29 AM
Electrical receptacle replacement question sherlock Electrical 7 05-20-2005 03:33 PM

Top of Page | View New Posts


Search Engine Friendly URLs by vBSEO 3.6.1