Identify the anchor family and exact product
A concrete screw is not interchangeable with an enclosure self-drilling metal screw. An adhesive system also includes specified components and installation procedures rather than simply a threaded rod in any glue. Ask for the named product and applicable documents. An anchor's appearance or diameter does not provide its complete design and installation information.
The substrate is part of the connection
Concrete condition, thickness, edges, spacing and embedment can influence the permitted use. A paver over concrete is not the same as the concrete support itself. Replacement work should account for existing holes and deterioration. The installer should explain how the approved detail will be followed and what happens if the actual support differs from the assumed condition.
A practical homeowner example
An old anchor must be removed from a post base. The contractor checks the replacement product and repair detail instead of selecting a fastener solely because it fits the old hole.
This is an illustrative planning scenario, not a report of a particular West Coast Screening project.
Questions to bring to an estimate
- Keep the document title, applicable version and project identification together.
- Ask who determines the criteria or approval basis for this particular scope.
- Retain the governing documents and written resolutions of changes.
Frequently asked question
Can a metal-framing screw be used as a concrete anchor?
Only a product specifically suitable and documented for the intended concrete anchorage should be considered. A self-drilling point for metal does not establish that suitability.
Related glossary terms
For the broader vocabulary, return to the pool cage and screen-enclosure glossary.
Authority sources and further reading
- Simpson Strong-Tie — Screw versus Expansion Anchors
- Simpson Strong-Tie — Supplemental Topics for Anchors
Use these sources within their scope. Manufacturer information applies to the identified product; research and general guidance do not establish a rating or an approved repair for an individual project.