Densostrip Sealing System in Jeddah | Concrete Sealing System

Densostrip Sealing System in Jeddah, supplied by Nassguard, protects external joints in precast concrete structures against backfill infiltration. The system combines a bitumen-based primer with an adhesive sealing membrane applied over the assembled joint.

A continuous external seal helps prevent surrounding backfill material from entering through joint openings. This makes correct preparation, membrane positioning and edge adhesion important during installation. Nassguard supplies Densostrip™ External Concrete Joint Sealing System for infrastructure requirements across Jeddah, Riyadh, Dammam, Jubail and Al Khobar.

What Is the Densostrip™ External Concrete Joint Sealing System?

The Densostrip External Concrete Joint Sealing System is a cold-applied primer-and-tape system for precast concrete pipes, culverts and crown units.

Its membrane incorporates a non-rotting synthetic carrier impregnated with adhesive mastic and backed with a durable PVC laminate. A removable release film protects the adhesive before installation.

The membrane spans the outside of the joint and bonds to the prepared concrete on both sides. This external application differs from Densostrip jointing strips, which compress between concrete joint faces.

Key Features of the Densostrip External Sealing System

The system combines a conformable membrane with a practical application method for precast concrete joint protection.

• External joint coverage forms a barrier against backfill infiltration.
• Conformable construction follows suitable concrete profiles around the joint.
• Cold application allows membrane installation without hot-poured sealing compounds.
• Strong adhesion supports continuous contact with correctly prepared and primed concrete.
• PVC backing provides a durable outer surface.
• Joint-deflection accommodation allows flexibility within the intended installation.
• Adaptable coverage suits different component sizes when the correct tape width is selected.

Applications of Densostrip Concrete Joint Sealing Systems

Use the system where the project requires an external membrane across compatible precast concrete joints.

• Concrete drainage pipes: Cover external joints to restrict entry of surrounding backfill.
• Box culverts: Seal the outside of joints between adjoining precast sections.
• Crown units: Protect suitable external connections in precast assemblies.
• Road drainage projects: Support joint-protection requirements during drainage construction.
• Infrastructure developments: Provide external sealing for specified concrete drainage installations.
• Saudi construction projects: Support suitable works across Jeddah, Riyadh, Dammam, Jubail and Al Khobar.

Select the system against the actual joint design and project requirements, including any separate watertightness requirements.

Concrete Preparation and Membrane Installation

Good adhesion starts with sound concrete and a clean bonding area.

• Inspect the substrate: Confirm that the concrete is sound and suitable for sealing.
• Clean the joint area: Remove loose dust, debris and contamination.
• Dry the surfaces: Ensure the bonding area is clean and dry before priming.
• Apply Denso Primer D: Coat the full joint length, extending at least 50mm onto each side, and allow it to dry.
• Select sufficient tape width: Provide at least 45mm of membrane coverage on each side of the joint.
• Centre the membrane: Remove the release film progressively and press the adhesive face firmly into position.
• Avoid installation defects: Keep the membrane taut without wrinkles or trapped air.
• Finish overlaps and edges: Use the required splice overlap, then press down the entire membrane and check that every edge is sealed.

Standards and Test References

The following references apply to testing the Densopol 60 tape component, rather than representing standalone certification of the complete concrete joint system.

• ASTM D1000 — Referenced for tape properties including thickness, elongation and breaking strength.
• ASTM G14 — Referenced for impact-resistance testing.
• ASTM D1004 — Referenced for tear-resistance testing.

Inspection, Storage and Maintenance

Inspect the completed membrane before backfilling, while the full joint remains accessible.

• Check joint coverage to confirm the membrane remains centred.
• Inspect all edges for lifting or incomplete adhesion.
• Check overlaps for correct arrangement and firm contact.
• Look for damage such as cuts, wrinkles or trapped air.
• Complete repairs before covering the installation.
• Protect the membrane during backfilling according to the project method.
• Store materials in original packaging away from direct heat and open flames.

Why Choose Nassguard for the Densostrip Sealing System in Jeddah?

Nassguard supplies materials for precast concrete joint-protection requirements. Clear project information helps establish the appropriate system configuration.

• Joint drawings help identify the required membrane width and coverage.
• Total joint lengths support tape and primer quantity planning.
• Exact system identification distinguishes external sealing tape from compressed jointing strips.
• Project schedules clarify the required supply date.
• Delivery details support requirements across Jeddah, Riyadh, Dammam, Jubail and Al Khobar.

Frequently Asked Questions

1. What does the Densostrip external system protect against?
It seals suitable external concrete joints against backfill infiltration.

2. Is it the same as Densostrip concrete jointing strips?
No, this system uses an external membrane, while jointing strips compress between concrete faces.

3. Which primer does the external system use?
The specified primer is Denso Primer D.

4. Can the tape be applied to wet concrete?
The bonding surfaces must be clean, dry and sound before installation.

5. How far should the membrane extend beyond the joint?
Provide at least 45mm of coverage on each side.

6. Does it require heating during normal application?
The external sealing system is cold-applied.

7. How can I order the Densostrip system in Jeddah?
Contact Nassguard with joint dimensions, total joint length, quantities and delivery requirements.

Conclusion

The Densostrip™ External Concrete Joint Sealing System provides a flexible external barrier for suitable precast concrete joints. Correct tape width, dry surface preparation and firmly sealed overlaps help maintain continuous protection against backfill infiltration.

For the Densostrip Sealing System in Jeddah, send Nassguard your joint details and project requirements. Confirming the primer, tape configuration and installation conditions together helps ensure the supplied materials match the work.