Summary: Learn how to fill gaps in floorboards, use foam backer rods to fill floorboard gaps and use caulk/silicone sealant to seal the gap between floorboards.
Older homes that have retained old hardwood floorboards may have unwanted gaps between the boards. Over time the timber separates leaving noticeable spacing which can become home to dirt and debris, or they may allow drafts into the room. It may be necessary to remove and replace the old timber, however in the interest of time and cost, it is possible to fill the gaps instead. This is known as caulking and is best done before you fully refurbish the floors.
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