Unplasticized Polyvinyl Chloride (uPVC) is renowned for its excellent resistance to a wide array of chemicals, including acids, alkalis, alcohols, and some oils. Its highly rigid structure, due to the lack of softening agents (plasticizers), contributes to its superior chemical resistance compared to its plasticized counterpart. However, it does have vulnerabilities; solvents and ketones can cause damage or degradation. This robust resistance makes uPVC an ideal material for pipes and fittings in construction, offering long-lasting performance in various chemical environments. Careful selection based on the specific chemical exposure is recommended to ensure the longevity and integrity of uPVC installations.

Using PVC primer before applying PVC cement is highly recommended to ensure a strong and lasting joint. The primer cleans and softens the PVC surface, allowing the cement to bond more effectively. While not always mandated by building codes, skipping the primer can lead to weaker joints that may fail over time, especially in pressurized systems or in critical applications. Some situations, such as repairs in a hard-to-reach area or minimal stress applications, might seem suitable for a primer-less approach, but for reliability and compliance with most plumbing standards, using primer is the best practice.

Installing a PVC fence on concrete involves several steps ensuring a sturdy and enduring installation. Firstly, plan your layout meticulously, marking where posts will go. You'll need post mounts designed for concrete, which safely secure your posts in place. Drill pilot holes in the concrete using a hammer drill and a masonry bit corresponding to the size of your mounts. Insert the post mounts into the holes, using concrete screws or anchors to secure them. Once all mounts are installed, you can insert your PVC posts into the mounts. Ensure they're level before proceeding to attach the panels between posts according to the manufacturer's instructions. It’s essential to use hardware that is suitable for outdoor use to prevent corrosion. Applying a silicone sealant around the base of the posts can prevent water from seeping in, which is especially vital in freeze-thaw climates. This method provides a strong, long-lasting fence without the need to disturb the concrete surface extensively.