Damp proof course article

A damp proof course article for forming a damp proof course in a substrate, the damp proof course article comprising an absorbent member and a damp proof course material absorbed into the absorbent member, the damp proof course material comprising an active agent, wherein the active agent comprises a combination of an octyltriethoxysilane and one or more of an alkoxysilane selected from a propylalkoxysilane, a butylalkoxysilane, a dodecylalkoxysilane, and a hexadecylalkoxysilane,

• wherein the absorbent member has a formation on or in the outer surface of the absorbent member, said formation being provided to facilitate disposing the absorbent member in a hole in the substrate and/or to facilitate release of the active agent into the substrate, and
• wherein the formation is in the form of at least one groove extending lengthwise of the absorbent member, the groove being defined in the outer surface of the absorbent member.

A damp proof course article for forming a damp proof course in a substrate, the damp proof course article comprising an absorbent member and a damp proof course material absorbed into the absorbent member, the damp proof course material comprising an active agent, wherein the active agent comprises a combination of an octyltriethoxysilane and one or more of an alkoxysilane selected from a propylalkoxysilane, a butylalkoxysilane, a dodecylalkoxysilane, and a hexadecylalkoxysilane,

• including release control means for controlling release of the damp proof course material from the absorbent member,
• wherein the release control means reduces the surface porosity of at least one region of the absorbent member relative to the porosity of the remainder of the absorbent member, and
• wherein the release control means comprises an at least partially melted region of the absorbent member to reduce the porosity thereof.

A damp proof course article for forming a damp proof course in a substrate, the damp proof course article comprising an absorbent member and a damp proof course material absorbed into the absorbent member, the damp proof course material comprising an active agent, wherein the active agent comprises a combination of an octyltriethoxysilane and one or more of an alkoxysilane selected from a propylalkoxysilane, a butylalkoxysilane, a dodecylalkoxysilane, and a hexadecylalkoxysilane,

• including release control means for controlling release of the damp proof course material from the absorbent member,
• wherein the release control means reduces the surface porosity of at least one region of the absorbent member relative to the porosity of the remainder of the absorbent member, and
• wherein the release control means comprises a sealant coating on the, or each, region of the absorbent member, said sealant coating being capable of restricting the diffusion of the damp proof course material from the absorbent member.

A damp proof course article for forming a damp proof course in a substrate, the damp proof course article comprising an absorbent member and a damp proof course material absorbed into the absorbent member, the damp proof course material comprising an active agent, wherein the active agent comprises a combination of an octyltriethoxysilane and one or more of an alkoxysilane selected from a propylalkoxysilane, a butylalkoxysilane, a dodecylalkoxysilane, and a hexadecylalkoxysilane,

• including release control means for controlling release of the damp proof course material from the absorbent member,
• wherein the release control means reduces the surface porosity of at least one region of the absorbent member relative to the porosity of the remainder of the absorbent member, and
• wherein the release control means comprises spacing means on the, or each, region of the absorbent member, wherein the spacing means is configured to space the, or each, region of the absorbent member from a side of a drilled hole in the substrate.