LANDPROS LANDSCAPE CONCEPTS & DESIGNS WILL STAND BY AND SUPPORT THE ICPI WARRANTY WITH THE USE OF THEIR PRODUCTS:

Installation should be performed by experienced contractors who hold a current certificate in the CMHA Concrete Paver Installer Certification Program. Con tractors holding this certificate have been instructed and tested on knowledge of interlocking concrete pavement construction. CMHA guide specifications available on www.MasonryAndHardscapes.org and project specifications should require that the job foreman hold this certificate and be present on the job site during paver installation. A certified installer with an Residential Paver Specialist and/or Commercial Paver Specialist designation has demonstrated knowledge of best construction practices for these applications. Project specifications should reference these contractor qualifications as well.

The installation guidelines below apply to pedestrian and vehicular applications.

Soil Subgrade:

Once excavation is complete, the soil subgrade should be compacted prior to placing the aggregate base. Compaction should be at least 98% Proctor density (per ASTM D698) for pedestrian areas and residential driveways, and at least 98% modified Proctor density (per ASTM D1557) for areas under constant vehicular traffic. Consult compaction equipment manufacturers’ recommendations for applying the proper equipment to compact a given soil type. Geotextiles are sometimes used to separate fine subgrade soils from the base/subbase material. Geotextiles should be selected using AASHTO M-288 Geotextile Specification for Highway Applications. Geotextiles can help reduce the onset of deformation.

Some soils may not achieve these recommended minimum levels of density. These soils may have a low bearing capacity or be continually wet. If they are under a base that will receive constant vehicular traffic, the soils may need to be stabilized, or have drainage designed to remove excess water.

Aggregate Base:

Aggregate base materials should conform to that used under asphalt. If no local, state, or provincial standards exist, then the requirements for aggregate base in ASTM D2940 are recommended. Compacted lift thickness is based on the force of the compaction equipment. Minimum lift thickness are typically between 4 to 6 inches. Consult with compaction equipment manufacturers for minimum lift thickness recommendations. The thickness of the base depends on the strength of the soil, drainage, climate, and traffic loads. Base thickness used under asphalt can typically be used under interlocking concrete pavers. Minimum aggregate base thickness for walks should be 4 to 6 in. (100 to 150 mm), driveways 6 to 8 in. (150 to 200 mm), and streets 8 to 12 in. (200 to 300 mm). Thicknesses may be greater depending on site conditions, freezing temperatures, and traffic (typically defined at 18,000 lb. or 80 kN equivalent single axle loads), as well review by a qualified design professional.

Aggregate base compaction under pedestrian and residential driveway pavements should be at least 98% of standard Proctor density (per ASTM D698). The aggregate base should be compacted to at least 98% modified Proctor density (per ASTM D1557) for vehicular areas. Compaction equipment suppliers can provide information on the appropriate machines for compacting base material. These density recommendations for areas next to curbs, utility structures, lamp bases, and other protrusions in the pavement are essential to minimize settlement. Site inspection and testing of the compacted soil and base materials are recommended to ensure that compaction requirements have been met. Compacted base materials stabilized with asphalt or cement may be used in heavy load applications or over weak soil subgrades. The surface of the compacted base should be smooth with a maximum tolerance of ±3/8 in. (10 mm) over a 10 ft. (3 m) straight-edge.

Bedding Sand:

Bedding sand should conform to the grading requirements of ASTM C33 or CSA-A23.1-FA1. Do not use mason sand because it can be slow draining and unstable. Stone dust or waste screenings should not be used, as they can have an excessive amount of material passing the No. 200 (0.075 mm) sieve. CMHA Tech Note PAV-TEC-017–Bedding Sands for Vehicular Applications provides additional guidance on evaluating beddings sands under vehicular traffic. The sand should be screeded to 1 to 11/2 in. (25 to 40 mm) uncompacted, consistent thickness. Do not use the sand to fill depressions in the base. These eventually will be reflected in the surface of the finished pavement. Fill any depressions with base material and compact.

Geotextile is recommended in the following places to prevent migration into joints and cracks. These areas are adjacent to curbs, roof parapets, drains, utility structures, and over asphalt or cement stabilized bases. When applied in these locations the fabric should be turned up against vertical surfaces to contain the bedding sand. Bedding sand drainage should be accomplished with weep holes through stabilized, asphalt or concrete bases, or through curbs, and typically placed at the lowest elevations.

CMHA

LANDPROS LANDSCAPE CONCEPTS & DESIGNS WILL STAND BY AND SUPPORT THE BELGARD WARRANTY WHEN BELGARD PRODUCTS ARE USED IN THE INSTALLATION:

Product Warranty Overview

Oldcastle APG (“Belgard”) is proud to inform you that all of our interlocking concrete paver and retaining walls (“Products”) meet and/or exceed the requirements of ASTM C-936 and ASTM C-1372. Belgard guarantees its Products against these standards for the lifetime of the Product defined by ICPI. This guarantee does not apply to splitting, chipping or other breakage that could be caused by impact, abrasion or overloading. This warranty is transferable. The original proof of purchase is required.

Valid Conditions

This warranty is only valid if the material is installed under the guidelines of the CMHA or the Belgard Installation Guideline Manual. Improper installation voids this warranty. This warranty is for residential applications only and does not apply to commercial applications. It is recommended that the job is installed by a Belgard Contractor Program participant who guarantees their workmanship for a minimum of 3 years from the date of install. For warranty service, contact Belgard at 1-877-BELGARD.

Your Warranty Agreement

The warranties in this limited warranty are the only warranties applicable to the veneer products. There are no other warranties, representations, or conditions of any kind, express or implied, statutory or otherwise, with respect to the interlocking concrete paver or retaining wall products supplied by the manufacturer, including, but not limited to, any implied warranties of merchantability or fitness for a particular purpose. All such warranties are hereby specifically disclaimed and manufacturer shall have no liability therefore, notwithstanding (1) manufacturer’s actual knowledge of any intended use of the interlocking concrete paver or retaining wall products or (2) any advice or representations that may have been rendered by manufacturer concerning the design, manufacture, fabrication, sale, use, installation or provision of the interlocking concrete paver or retaining wall products. No statement, product, or description by manufacturer or its employees or other representatives, in addition to or beyond this limited warranty shall constitute a warranty. Buyer agrees that its sole and exclusive remedies for breach of this limited warranty, and the sole and exclusive obligations of manufacturer with respect to any claims for breach of this limited warranty, shall be those remedies expressly set forth herein.

Supporting Your Warranty

A service representative will investigate your claim within 10 business days. If the Belgard product fails to meet the specifications, Belgard will replace the defective product at no charge. Color matching cannot be guaranteed. Belgard will not be responsible for any replacement labor, consequential damages or incidental damages. This warranty gives you specific legal rights, and you may also have other rights which vary from state to state. Some states do not allow for the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to you.

BELGARD

LANDPROS LANDSCAPE CONCEPTS & DESIGNS WILL STAND BY AND SUPPORT THE MONTEREY TILE WARRANTY WHEN WE USE THEIR PRODUCTS FOR THE INSTALLATION:

If you’ve been a subscriber for any length of time, you know our position on the use of quarter minus crushed granite (QMCG) under natural stone pavers. Don’t.

THE USE OF QMCG WILL VOID YOUR WARRANTY.

It’s something we wish all landscaper installers knew. Time and again, we come across an improper installation in which the installer used a QMCG base.

Let’s discuss what happens when you use QMCG….

Quarter minus contains granite fines or granite sand. It has a fine texture of silt and small rocks. We know installers like to use it because it packs together into a firm, compacted base. And it’s a little cheaper than using aggregate base course (ABC).

However, QMCG compacts so well that it doesn’t drain. THE USE OF QMCG WILL VOID YOUR WARRANTY.

Add the compacted base over Arizona’s hard-packed caliche and you’ve just built a pool, not a patio.

As you know, natural stone can be porous. Soft stone like limestone or travertine is much more absorbent than a hard stone like granite or marble.

That moisture retained in the QMCG base is going to leach into absorbent stone and cause ghosting or framing. The color of the muddy granite fines is going to bleed into those beautiful pavers. The damp patio is going to grow moss and algae.

That’s why we DO NOT install pavers on top of QMCG. For a firm foundation that encourages drainage, we USE 3-4 inches of compacted ABC base and less than 1 inch of sand.