Before lumber companies began selling OSB, the standard choice for sheathing a roof with a 24-inch rafter spacing was 1/2-inch CDX plywood - the letters CDX indicate that it is construction-grade material intended for exterior applications.
The answer is yes, you can lay new roof shingles over old ones. But before we get started, one thing must be clear: adding new roofing over old (sometimes called a "re-roof") is possible only with asphalt shingles (also called "composition shingles").
Tile and Asphalt are the most used materials for roofing, and they're manufactured with the usage of concrete, clay or oil. The rise of oil prices can directly impacted asphalt shingles to become more costly. Furthermore, the cost of disposing old and damaged materials has also increased in the recent years.
Comfort, maintenance, additional space, energy saving or safety and preparedness, as mentioned earlier, are the main forms of home improvement. In terms of comfort, upgrading of heaters, HVAC, ventilation, bathroom additions and kitchen features, waterproofing or soundproofing of rooms are considered. Maintenance could be mainly of the roof, window
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