We re only talking about an area of about 3 inches between screws so a couple of thousandths expansion won t be a problem.
Attach downspouts to vinyl siding.
This is the method used by all.
Affixed in the middle with room on both sides it should be fine.
Most hooks are stainless steel so they won t corrode and they are easy to remove when you re done with them.
Drill a hole wide enough to accept the anchor you will be used to attach the gutter clamp for the downspout.
The easiest and safest way to hang something from vinyl siding is to use a siding hook.
What i ve done is to drill through the siding and insert a spacer the length of which is the same as the thickness of the siding and insulation.
Place a downspout strap at the top where it meets the elbow.
The common practice of attaching downspouts to vinyl siding is to wrap a metal or plastic strap around the downspout and nail or screw through the vinyl siding.
This will protect the siding from the intrusion of insects and weathering consequences.
In the case of installing a downspout onto vinyl siding a metal screw is used to secure it to the house.
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Check both ends of the siding for play first.
Using the clamp place it to secure the downspout.
Attaching downspout strap to vinyl siding if concerned about penetrations drill a hole for the screws and apply a dab of silicone adhesive sealant to the hole prior to fastening.
It slips into the groove between adjoining slats and once it clicks into place you can hang items as heavy as 12 pounds.
Use a fine pointed marker to mark the location of the holes for the clamp.
That way you don t compress the siding yet the screw holds the strap securely.
Then use a screw about 1 inch longer and drive it through the downspout strap through the spacer and into the solid siding below.
Using screws allows you.
Screw the fastener in slowly and release the trigger on the drill just before the screw head meets the vinyl siding.
Secure one end of the strap to the siding with a zip screw and a cordless screwdriver with 1 4 inch socket attachment.
