I bought this Weld-On pack with my pipe materials. My Roof Wiring and Devices Project Day 8 roof notes record joining the remaining PVC sections after pulling the cable groups through the route.
I bought Weld-On PVC Cement and Primer Pack as part of my camper van equipment.
I bought this Weld-On pack with my pipe materials. My Roof Wiring and Devices Project Day 8 roof notes record joining the remaining PVC sections after pulling the cable groups through the route.
Two Joining Materials in the Conduit Workflow
I pulled the roof cables through the PVC route with fish tape.
I fitted plastic trim around the roof opening where the wires entered the van.
I completed the remaining light connections, covered the boxes and joined the final conduit sections.
The roof at the end of my Roof Wiring and Devices Project Day 8 wiring session.The trimmed roof opening where my cable groups enter the van.
My Takeaway for the Build
My roof-wiring diary finishes with the remaining PVC sections joined and the boxes covered. The Weld-On purchase groups cement and primer as separate materials. Comparing the paired packs by cement formulation and visible color keeps that distinction clear instead of treating every can as the same part of assembly.
Product Details And Van-Build Uses
Specification
Product Detail
Pack reference
Weld-On 15900
Cement
780 clear PVC solvent cement
Other component
Purple plumbing primer
The Weld-On twin pack separates preparation from cementing: purple primer prepares the mating PVC surfaces, while the clear cement makes the solvent-welded joint. Dry-fit a van’s pipe route before opening either can so the elbows and couplings point in the intended direction. Cut the pipe ends square and remove burrs before assembly. The 780 data sheet identifies the cement family; its instructions belong with the actual pipe and fitting system rather than a general-purpose mounting adhesive.
They perform different steps. Primer prepares PVC mating surfaces; solvent cement is then applied for assembly.
Alternative products
Two Alternatives to Compare
Oatey's handy pack combines clear cement with purple primer. Christy's pairs blue cement and purple primer, offering a different cement formulation and visible color during assembly.
