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How to attach interior window sill

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Subject Author Date
How to attach interior window sill Graeme 03-10-2008
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Posted by Graeme on March 10, 2008, 6:05 am
Hello,

I would like to replace an interior window sill on a sash window. The
replacement sill is made from pine and is 1.8m long by 30mm thick by 85mm
wide. The wood is not very heavy.I have cut it to size. About 35mm will sit
atop a row of bricks. What is the best method to attach the interior window
sill to the window frame? If I were to screw it horizontally through the
85mm width of the timber, how long should the screws be? I am also
considering installing 3 l brackets secured to the wall via masonry plugs.
Is this overkill? (PS-previous sill was nailed to the exterior window sill-I
think I will split the pine if I attempt to drive similar nails through the
pine).

Thanks,

Graeme.



Posted by DerbyDad03 on March 10, 2008, 7:17 am
On Mar 10, 6:05=A0am, "Graeme" <graeme> wrote:
> Hello,
>
> I would like to replace an interior window sill on a sash window. The
> replacement sill is made from pine and is 1.8m long by 30mm thick by 85mm
> wide. The wood is not very heavy.I have cut it to size. About 35mm will si=
t
> atop a row of bricks. What is the best method to attach the interior windo=
w
> sill to the window frame? If I were to screw it horizontally through the
> 85mm width of the timber, how long should the screws be? I am also
> considering installing 3 l brackets secured to the wall via masonry plugs.=

> Is this overkill? (PS-previous sill was nailed to the exterior window sill=
-I
> think I will split the pine if I attempt to drive similar nails through th=
e
> pine).
>
> Thanks,
>
> Graeme.

If you feel that the original method of attaching the sill was
adequate, you can avoid splitting the pine by pre-drilling the holes
and using screws. Counter sink the heads and fill with putty to hide
the heads. Use trim screws (smaller heads) to makes them even less
noticeable.

Posted by Joe on March 10, 2008, 2:51 pm
On Mar 10, 5:05=A0am, "Graeme" <graeme> wrote:
> Hello,
>
> I would like to replace an interior window sill on a sash window. The
> replacement sill is made from pine and is 1.8m long by 30mm thick by 85mm
> wide. The wood is not very heavy.I have cut it to size. About 35mm will si=
t
> atop a row of bricks. What is the best method to attach the interior windo=
w
> sill to the window frame? If I were to screw it horizontally through the
> 85mm width of the timber, how long should the screws be? I am also
> considering installing 3 l brackets secured to the wall via masonry plugs.=

> Is this overkill? (PS-previous sill was nailed to the exterior window sill=
-I
> think I will split the pine if I attempt to drive similar nails through th=
e
> pine).
>
> Thanks,
>
> Graeme.

Why bother with nails or screws? Construction adhesive works just
fine. Loctite, Liquid Nails, maybe other good one out there. A minor
advantage would be sealing against air leaks,

Joe

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