Bare dimple boards and geotextile composite drainage boards differ in what is supplied with the core. HDPE dimple drainage boards may need a separately specified filter or other interfaces, depending on the design. A lower board price can omit materials and labour that another offer already includes.

With geotextile composite drainage boards, ask how the fabric is attached and connected at site joints. This comparison looks at filtering, cuts and installation scope rather than assuming that a bonded fabric automatically resolves every detail of a drainage assembly.

List the included layers

Put core material, filter and any separate protection on a comparison schedule. Record the exact construction of each offer. A bare-core quote should not be compared with a composite price without adding the missing components. The layer drawing should explain which materials remain site-installed under each option.

Compare filter requirements

Use the adjoining soil or media information and the project's specified properties. A bonded filter still needs to meet its intended duty. Do not accept a fabric because it is attached to a suitable-looking core. Conversely, a separate filter needs clear placement and continuity details rather than being added as an unspecified accessory.

Inspect joints and cut edges

Ask how filters continue across core connections and around penetrations. Cutting a factory composite can expose a core edge that requires the approved treatment. Include any supplemental fabric or accessories in the quantity schedule. These small details are easy to omit from a material-only comparison but matter during installation.

Consider installation responsibilities

Compare attachment, cutting and joint tasks for each arrangement. Clarify which contractor installs separate layers and who inspects them. A composite may reduce some operations while introducing model-specific connection instructions. Price the actual site method and avoid assuming either option is always simpler in confined or irregular areas.

Confirm the accepted assembly

Ask Suneco New Materials to quote a defined bare or composite construction against the same section. Include filters and accessories explicitly. The final decision should identify all required layers and connections, making the offers comparable without confusing the presence of a bonded fabric with complete drainage-system approval.