I won't be trying this until the weekend, so I figured I'd ask and maybe get some other suggestions. I also don't have a contour gauge (yet) so I haven't
had a chance to test this...
Part of my house is sided with this type of Fiber Cement shingles:
https://www.homedepot.com/p/GAF-WeatherSide-Purity-Straight-12-in-x-24-in-Fiber-Cement-Shingle-Siding-2213000WG/100039893
In the past I've repaired some bolt holes by overfilling with Durham's Rock
Hard and then shaping the fill with sandpaper to match the surrounding area.
Slow, but it works.
I'm going to be painting all of the siding soon and I want to fix a few
larger spots that have just been filled and painted over in the past. Holes
from a railing and window box that were removed, etc. Since these holes
weren't shaped, they are more noticeable.
I was thinking of using a contour gauge to grab the contour of the area above
the repair and then drag the gauge over slightly cured Bondo to impart the
grooves. I assume it will still take some sanding, but if the gauge can get
me started, it might save some time.
Any other suggestions besides a contour gauge?
On Thursday, September 26, 2019 at 11:48:06 AM UTC-4, DerbyDad03 wrote:
> I won't be trying this until the weekend, so I figured I'd ask and maybe get some other suggestions. I also don't have a contour gauge (yet) so I haven't
> had a chance to test this...
>
> Part of my house is sided with this type of Fiber Cement shingles:
>
> https://www.homedepot.com/p/GAF-WeatherSide-Purity-Straight-12-in-x-24-in-Fiber-Cement-Shingle-Siding-2213000WG/100039893
>
> In the past I've repaired some bolt holes by overfilling with Durham's Rock
> Hard and then shaping the fill with sandpaper to match the surrounding area.
> Slow, but it works.
>
> I'm going to be painting all of the siding soon and I want to fix a few
> larger spots that have just been filled and painted over in the past. Holes
> from a railing and window box that were removed, etc. Since these holes
> weren't shaped, they are more noticeable.
>
> I was thinking of using a contour gauge to grab the contour of the area above
> the repair and then drag the gauge over slightly cured Bondo to impart the
> grooves. I assume it will still take some sanding, but if the gauge can get
> me started, it might save some time.
>
> Any other suggestions besides a contour gauge?
I just read a suggestion in the Fine Homebuilding forum about dragging a wide
putty knife (wider then the filled spot) across the grain to transfer the
pattern.
That suggestion has potential.
On 9/26/2019 10:48 AM, DerbyDad03 wrote:
> I won't be trying this until the weekend, so I figured I'd ask and maybe get some other suggestions. I also don't have a contour gauge (yet) so I haven't
> had a chance to test this...
>
> Part of my house is sided with this type of Fiber Cement shingles:
>
> https://www.homedepot.com/p/GAF-WeatherSide-Purity-Straight-12-in-x-24-in-Fiber-Cement-Shingle-Siding-2213000WG/100039893
>
> In the past I've repaired some bolt holes by overfilling with Durham's Rock
> Hard and then shaping the fill with sandpaper to match the surrounding area.
> Slow, but it works.
>
> I'm going to be painting all of the siding soon and I want to fix a few
> larger spots that have just been filled and painted over in the past. Holes
> from a railing and window box that were removed, etc. Since these holes
> weren't shaped, they are more noticeable.
>
> I was thinking of using a contour gauge to grab the contour of the area above
> the repair and then drag the gauge over slightly cured Bondo to impart the
> grooves. I assume it will still take some sanding, but if the gauge can get
> me started, it might save some time.
>
> Any other suggestions besides a contour gauge?
>
Bondo or Durham's and a stiff bristled scrub brush or even a wire brush.
Fill the area and play "artist" while it's still relatively wet. Let
it dry once you have it looking "right" and then come back after it
truly sets up and knock down and high points with sandpaper.
Different material, I know, but I removed a through the wall AC sleeve
on a cedar sided (plywood) wall. I slightly enlarged the opening to
make it perfectly square and then cut a piece of replacement ply so that
it was pretty much a press fit. Coated edges with paintable silicone
caulk and carefully, butg quickly "touched it up" with a wire brush.
Hit it up with a coat or two of solid stain to match. You have to be
right on top of it and looking for the "repair" to see it. The HVAC
tech who came out to charge the lines on the replacement split system I
installed had to ask where the thru wall unit had been. I pointed to
spot two feet west of where he was looking, he squinted and said, "Oh,
nice work!"
On Thursday, September 26, 2019 at 1:07:55 PM UTC-4, Unquestionably Confused wrote:
> On 9/26/2019 10:48 AM, DerbyDad03 wrote:
> > I won't be trying this until the weekend, so I figured I'd ask and maybe get some other suggestions. I also don't have a contour gauge (yet) so I haven't
> > had a chance to test this...
> >
> > Part of my house is sided with this type of Fiber Cement shingles:
> >
> > https://www.homedepot.com/p/GAF-WeatherSide-Purity-Straight-12-in-x-24-in-Fiber-Cement-Shingle-Siding-2213000WG/100039893
> >
> > In the past I've repaired some bolt holes by overfilling with Durham's Rock
> > Hard and then shaping the fill with sandpaper to match the surrounding area.
> > Slow, but it works.
> >
> > I'm going to be painting all of the siding soon and I want to fix a few
> > larger spots that have just been filled and painted over in the past. Holes
> > from a railing and window box that were removed, etc. Since these holes
> > weren't shaped, they are more noticeable.
> >
> > I was thinking of using a contour gauge to grab the contour of the area above
> > the repair and then drag the gauge over slightly cured Bondo to impart the
> > grooves. I assume it will still take some sanding, but if the gauge can get
> > me started, it might save some time.
> >
> > Any other suggestions besides a contour gauge?
> >
>
> Bondo or Durham's and a stiff bristled scrub brush or even a wire brush.
> Fill the area and play "artist" while it's still relatively wet. Let
> it dry once you have it looking "right" and then come back after it
> truly sets up and knock down and high points with sandpaper.
>
> Different material, I know, but I removed a through the wall AC sleeve
> on a cedar sided (plywood) wall. I slightly enlarged the opening to
> make it perfectly square and then cut a piece of replacement ply so that
> it was pretty much a press fit. Coated edges with paintable silicone
> caulk and carefully, butg quickly "touched it up" with a wire brush.
>
> Hit it up with a coat or two of solid stain to match. You have to be
> right on top of it and looking for the "repair" to see it. The HVAC
> tech who came out to charge the lines on the replacement split system I
> installed had to ask where the thru wall unit had been. I pointed to
> spot two feet west of where he was looking, he squinted and said, "Oh,
> nice work!"
After trying a few different methods, turns out the Durham's and the scrubby side
of a Scotch-Brite sponge was the best option.
The Durham's gave me much more working time than the Bondo and the wet scrubby
basically reactivated it so I could clean it out from the grooves in the siding. The occasional
use of a thin wooden skewer help shaped inside grooves if that where the hole was.
Now I just have to figure out who put all those damn holes in the siding over the past 35
years. ;-)
On 9/28/2019 9:19 PM, DerbyDad03 wrote:
> On Thursday, September 26, 2019 at 1:07:55 PM UTC-4, Unquestionably Confused wrote:
>> On 9/26/2019 10:48 AM, DerbyDad03 wrote:
>>> I won't be trying this until the weekend, so I figured I'd ask and maybe get some other suggestions. I also don't have a contour gauge (yet) so I haven't
>>> had a chance to test this...
>>>
>>> Part of my house is sided with this type of Fiber Cement shingles:
>>>
>>> https://www.homedepot.com/p/GAF-WeatherSide-Purity-Straight-12-in-x-24-in-Fiber-Cement-Shingle-Siding-2213000WG/100039893
>>>
>>> In the past I've repaired some bolt holes by overfilling with Durham's Rock
>>> Hard and then shaping the fill with sandpaper to match the surrounding area.
>>> Slow, but it works.
>>>
>>> I'm going to be painting all of the siding soon and I want to fix a few
>>> larger spots that have just been filled and painted over in the past. Holes
>>> from a railing and window box that were removed, etc. Since these holes
>>> weren't shaped, they are more noticeable.
>>>
>>> I was thinking of using a contour gauge to grab the contour of the area above
>>> the repair and then drag the gauge over slightly cured Bondo to impart the
>>> grooves. I assume it will still take some sanding, but if the gauge can get
>>> me started, it might save some time.
>>>
>>> Any other suggestions besides a contour gauge?
>>>
>>
>> Bondo or Durham's and a stiff bristled scrub brush or even a wire brush.
>> Fill the area and play "artist" while it's still relatively wet. Let
>> it dry once you have it looking "right" and then come back after it
>> truly sets up and knock down and high points with sandpaper.
>>
>> Different material, I know, but I removed a through the wall AC sleeve
>> on a cedar sided (plywood) wall. I slightly enlarged the opening to
>> make it perfectly square and then cut a piece of replacement ply so that
>> it was pretty much a press fit. Coated edges with paintable silicone
>> caulk and carefully, butg quickly "touched it up" with a wire brush.
>>
>> Hit it up with a coat or two of solid stain to match. You have to be
>> right on top of it and looking for the "repair" to see it. The HVAC
>> tech who came out to charge the lines on the replacement split system I
>> installed had to ask where the thru wall unit had been. I pointed to
>> spot two feet west of where he was looking, he squinted and said, "Oh,
>> nice work!"
>
> After trying a few different methods, turns out the Durham's and the scrubby side
> of a Scotch-Brite sponge was the best option.
>
> The Durham's gave me much more working time than the Bondo and the wet scrubby
> basically reactivated it so I could clean it out from the grooves in the siding. The occasional
> use of a thin wooden skewer help shaped inside grooves if that where the hole was.
>
> Now I just have to figure out who put all those damn holes in the siding over the past 35
> years. ;-)
>
Woodey and his pals. ;~)