Interior Sealer Application and Roller Prep
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Waterproofing Block at the Bruneau Observatory | PRO Painting Tips
What happens here
Once the exterior application is complete, carefully pull all the masking tape and paper from the door jambs, metal work, and other protected surfaces. Inspect the completed exterior walls for even coverage and any missed spots. For the interior curved walls of the observatory, the sealer is applied using a Titan Inner Feed Roller kit. This method reduces airborne overspray, which is beneficial in enclosed spaces. However, a common mistake is not properly 'delinting' the roller covers before use. If new roller covers are used, fibers can detach and stick to the wet sealer, requiring immediate removal with tweezers or by hand before the sealer dries, followed by smoothing the affected area with a damp sponge. To prevent this, always pre-roll new roller covers on a piece of masking tape or similar surface to remove loose fibers, or pre-soak them in water and spin them dry to remove lint.
Goal: Remove exterior masking, then apply interior sealer using an Inner Feed Roller to minimize overspray. Crucially, pre-clean new roller covers to prevent lint transfer, resolving any lint issues immediately with tweezers and a damp sponge.
Tools and materials
- Fine-point Tweezers
- Little Giant Mighty Lite Ladder
- Sponge
- Titan Inner Feed Roller Kit
- Masking Tape — Delinting roller covers before use
- Titan Inner Feed Covers — Roller covers for the inner feed roller, ensuring proper nap for block surfaces
- Valspar Protective Sealer Natural Look — Waterproofing and protecting interior cinder blocks
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